Revolvers Never Jam! – Verdict: Busted!

Claim

“Wheelguns are immune to failure.” In other words, some believe revolvers never jam or malfunction.

Reality

Revolvers are rugged, but they’re still machines with moving parts. Dirt, debris, heat, loose screws, ammunition quirks, or timing problems can jam a revolver’s cylinder harder than a bank vault. Unlike many semi-auto failures, revolver malfunctions often can’t be fixed with a quick tap-rack drill – some require tools or time to resolve. In short, revolvers do malfunction, and simply “pulling the trigger again” won’t always solve it.

Why People Believe It

• Simplicity inspires confidence: Revolvers have a simple manual of arms – load, point, pull – which gives an impression of absolute certainty. New shooters are often told revolvers are “point and click” reliable with no safeties or slide to operate. This straightforward operation leads many to assume there’s not much that can go wrong.
  
  

• Semi-auto jams are visible and notorious: Everyone has seen an auto-pistol stovepipe or fail to feed; these stoppages are obvious. Revolver failures tend to be less common and less visible until the gun completely stops. People observe autos jamming and rarely see revolvers lock up, so they assume the wheelgun is infallible.
  
  

• Anecdotes and lore: For generations, instructors and gun store “experts” have touted revolvers as ultra-reliable (“Six for sure,” as NYPD used to say). Range lore often repeats that a revolver will fire every time unless it’s broken. This overlooks subtle failure modes that aren’t apparent until the trigger won’t move – problems that a shooter can’t clear by simply pulling the trigger again and that may even require tools to fix (e.g. a case stuck under the extractor star). Such stories persist, reinforcing the myth that “revolvers never jam” among those who haven’t experienced a wheelgun failure firsthand.
  
  

How Revolvers Actually FaiL

When revolvers do malfunction, it’s usually due to one of the following issues:

• Debris under the extractor star: Unburnt powder grains, grit, or brass flakes can get under the ejector (“extractor”) star and prevent it from seating fully. This raises the star by mere thousandths of an inch – enough that the cylinder won’t close or will drag hard. The classic symptom is a cylinder that suddenly will not shut or is difficult to turn because the star is sitting slightly high. Prevention: Keep that area clean and always eject empties with the muzzle straight up so gravity helps clear out debris. Even a tiny bit of crud can halt a reload or rotation.
  
  

• Backed-out (unscrewed) ejector rod: Many Smith & Wesson revolvers use a screw-in ejector rod (often with left-hand threads). If this rod loosens (backs out) during firing or use, it can lengthen and protrude enough to bind the cylinder/yoke. The revolver may become very hard to open, or the cylinder may even lock in place. In extreme cases, an unscrewed rod will prevent both opening and rotation of the cylinder. Fix: The rod must be re-tightened (usually by supporting the ejector star and turning the rod the correct direction). Note: Ruger double-action revolvers avoid this issue by using different latch designs (their ejector rods are not user-unscrewable), making this problem mainly a S&W concern.
  
  

• Fouling/lead buildup on cylinder face (and heat expansion): The front face of the cylinder (the disk that nearly touches the barrel) can accumulate carbon, powder residue, and lead deposits as you shoot. If the barrel/cylinder gap is very tight to begin with, this fouling can start to rub against the barrel’s forcing cone. After many rounds, heat causes metal parts to expand, narrowing the clearance even more. A revolver with an overly tight B/C gap (e.g. ~0.001–0.002″) may work when clean and cool, but bind up once it’s hot and dirty. Ruger explicitly warns that extensive firing of lead bullets can cause buildup that binds the cylinder. Prevention: Keep the cylinder face and forcing cone area clean, and ensure your revolver’s barrel-cylinder gap is in spec (around 0.003–0.006″ is ideal for duty/carry revolvers). A too-tight gap or excessive end-shake should be corrected by a gunsmith to prevent heat-related binding.
  
  

• “High” primers or other ammo dimension issues: If a primer in a cartridge isn’t seated fully (i.e. it’s slightly protruding from the case head), it can rub against the revolver’s recoil shield (the frame area behind the cylinder) and stop the cylinder from rotating. This often happens with handloads or defective ammo – a high primer acts like a brake. Similarly, an improperly crimped cartridge or an oversized case rim can drag against the frame or neighboring rounds. These issues may not be obvious until the cylinder suddenly feels stuck. Prevention: Inspect your ammunition – feel for flush primers and proper case dimensions. This is especially important with reloads. In a defensive revolver, use quality factory ammo and give each loaded chamber a quick spin check to feel for any binding before you rely on it.
  
  

• Bullet pull (“crimp jump”), especially in ultralight revolvers: Under heavy recoil, inertia can cause bullets in unfired chambers to creep forward out of their cases if the crimp isn’t strong enough. If a bullet jumps far enough forward, the tip of that bullet will protrude from the front of the cylinder and hit the back of the barrel (the forcing cone) when the cylinder tries to rotate. This completely locks the gun – the cylinder can’t turn because an unfired bullet is jammed against the barrel. This problem is most common in ultralight revolvers (Scandium/Titanium alloy frames, etc.) firing heavy-for-caliber bullets with stout recoil. In fact, Smith & Wesson provides a specific “bullet-unseat” test in the manual for their super-lightweight models: load all chambers, fire all but one, and then inspect the remaining cartridge to see if its bullet has shifted forward. If it has, that ammo is not safe to use in that gun. Prevention: Only use ammunition in lightweight revolvers that you have tested for crimp jump. Avoid very lightweight bullets in magnum loads for these guns (S&W even cautions against <120 gr .357 magnum in Scandium frames). When in doubt, perform the bullet creep test with your carry ammo.
  
  

• Timing/carry-up problems: “Timing” refers to the revolver’s mechanism aligning each chamber perfectly with the barrel and locking it in place before firing. If parts like the hand (which turns the cylinder), the ratchet, or cylinder stop (bolt) are worn or misfit, the cylinder may fail to carry up all the way. In other words, the chamber isn’t fully lined up when the hammer falls. This can cause various failures: the hammer drops on a chamber that isn’t locked (resulting in a misfire or a light strike), or the bullet shaves on the edge of the barrel (spitting lead and potentially binding the cylinder). In severe cases, a revolver that is badly out of time can jam itself or even suffer damage if fired (since the bullet’s path is obstructed). Symptoms: you might notice the cylinder doesn’t lock on one or more chambers during slow DA trigger pulls, or you see lead spitting from the barrel/cylinder gap. Prevention: Regularly check your revolver’s timing – with the gun unloaded, slowly cock it (or slowly pull the DA trigger) and listen/feel for the cylinder stop “click” into place before the hammer drops for each chamber. If any chamber doesn’t lock in time, or the cylinder can be manually rotated a bit further when the hammer is down, the timing is off. Timing issues usually require a gunsmith to fit new parts (often a new hand or bolt).
  
  

• Excessive end-shake & barrel/cylinder gap out of spec: “End-shake” is the small fore-and-aft play of the cylinder on its yoke. A little is normal, but if a revolver develops too much end-shake (from wear or peening), the cylinder can move forward under recoil and batter the frame. Excessive end-shake also effectively reduces the barrel-cylinder gap at the moment of firing. This can cause binding as things heat up, similar to the tight-gap issue described earlier. Revolver expert Grant Cunningham has recommended keeping a duty/defense revolver’s B/C gap in the ~0.004–0.006″ range, and using end-shake shims or a stretch collar to maintain that gap. If the gap is too narrow or end-shake is too high, fouling and heat will combine to seize the gun in prolonged firing. Prevention: During maintenance, measure your B/C gap and check for end-play. If end-shake is more than a few thousandths (e.g. you can visibly move the cylinder back and forth), have a gunsmith correct it. An out-of-spec gap or excessive end-play is a problem to fix before it causes a failure.
  
  

• Moon-clip related issues (for revolvers using moon clips, e.g. 9mm, .45 ACP revolvers): Moon clips are wonderful for fast reloads, but they introduce their own failure modes. The clips are thin pieces of spring steel and can bend easily if mishandled. A bent moon clip will hold the cartridges at a slight angle or out of position, which can bind the cylinder or cause misfires (if a round sits too far from the firing pin). Additionally, using the wrong thickness moon clip or brass that isn’t suited to your clips can cause the rounds not to sit flush. For instance, some 9mm revolvers come with different clip thickness options; a clip that’s too thick for the case groove will prevent the cylinder from closing or turning. Prevention: Handle moon clips with care – don’t toss loaded moon clips loosely in a range bag or pocket where they will get bent. Use a de-mooning tool to remove brass (prying them out carelessly can warp a clip). Use the proper clips for your specific revolver and ammo – and inspect them regularly. If a clip is bent or warped, discard it. High-quality (more rigid) moon clips are available for some models and may be worth the investment for serious defensive use.
  
  

• User-induced short-stroking of the trigger: Revolvers require the trigger to fully reset forward before the next shot. In double-action mode, if the shooter does not let the trigger return completely forward (perhaps due to trying to “ride the reset” as one might with a semi-auto), the mechanism can “short stroke.” This means the trigger pull is initiated again, but the cylinder hasn’t rotated fully to the next chamber or the hammer/sear didn’t reset. The result can be a dead trigger (no bang) or an incomplete rotation that leaves the gun out of battery. Essentially, the shooter has induced a failure to fire. Solution: Proper training – you must allow the trigger to travel all the way forward after each shot. Unlike some semi-autos, most revolvers have no audible or tactile intermediate “reset” point – the full forward position is the only correct reset. Note: This is not a mechanical malfunction of the gun per se, but it’s a common way a user can think their revolver “jammed” when in fact a slight change in technique will prevent it.
  
  

• General fouling & maintenance issues: Revolvers do need cleaning and upkeep. If you ignore basic maintenance, reliability suffers. For example, failing to clean under the extractor can lead to the aforementioned debris-induced jams; failing to tighten screws (like the ejector rod or sideplate screws) can let parts loosen during shooting and bind the action. Excess oil in the action can congeal with powder residue into gummy crud that slows down moving parts. In short, neglect can turn even a high-end revolver into a paperweight. Prevention: Follow the manufacturer’s cleaning guidelines. Keep critical areas (under the ejector star, cylinder pin, chambers, etc.) clean and lightly lubricated or dry as specified. Do not over-oil – a revolver generally needs only tiny amounts of lubricant in key spots; too much oil will attract debris. Regularly check that all screws (including the ejector rod and the yoke/cylinder latch screws) are snug. With reasonable care, a quality revolver can fire hundreds of rounds between cleanings, but you should not simply ignore maintenance because “it’s a revolver.”
  
  

Field Test Plan

To bust the “revolver can’t jam” myth, we’d run torture tests to provoke these failure modes in a controlled way. Each of the following drills is designed to induce or catch a specific malfunction:

Dirty-Star Drill (extractor star fouling test)

1. Shoot a high round count: Fire ~150 rounds of mixed ammo through the revolver without cleaning. Mix in ammo known for leaving unburnt powder (e.g. some .357 Magnum loads) if possible.
   
   

2. Stress the ejection process: Do most reloads with the muzzle straight up, but deliberately perform a few reloads with the muzzle down or tilted, so any loose powder can fall back into the mechanism. (This simulates poor technique that can drop debris under the star.)
   
   

3. Observe cylinder closing/rotation: After each reload, note if the cylinder feels gritty or becomes hard to close/lock. If a reload suddenly won’t allow the cylinder to close, you’ve likely trapped debris under the ejector. Document any failure to close or hard rotation events. Open the cylinder and check under the ejector star for powder grains or debris. Use a borescope or flashlight to confirm any particles.
   
   

4. Slow-motion analysis: Use high-speed camera footage focused on the cylinder gap during ejection to catch any unburnt powder falling back. Also film the ejector star; if debris is present, the footage may show the star sitting slightly high (not flush to the cylinder) when it tries to close. Expected outcome: At least once, unburned powder will lodge under the star, preventing the cylinder from closing. We clear it, show the speck of debris, and emphasize that the gun was essentially “jammed” until cleaned.
   
   

A tiny bit of debris under the ejector star (extractor) can prevent a revolver’s cylinder from closing. In this image, the extractor star is not fully seated due to debris underneath, which will bind the cylinder in place.

Heat & B/C Gap Stress Test (tight gap binding test)

1. Baseline measurement: Use feeler gauges to measure the revolver’s barrel/cylinder gap cold (and note end-shake if any). For example, say it’s .004″ at rest.
   
   

2. High-volume firing: Fire a 200-round string at a steady, brisk pace (to heat the gun significantly). For instance, shoot 4 cylinders (24 rounds) rapid, then another 4 after minimal cooling, and so on, until 200 rounds are through. Use a mix of lead bullet ammo if available, to accumulate lead/carbon on the cylinder face.
   
   

3. Monitor cylinder drag: Every 50 rounds, check the revolver by slowly cocking it to feel if the cylinder is starting to rub or drag at any point. Also note if the cylinder becomes hard to open. If dragging is felt, stop and measure the B/C gap again (the fouling may effectively reduce the gap). If possible, use a thickness gauge or even a shim to measure fouling layer on the cylinder face.
   
   

4. Record binding points: Document how many rounds it took before the cylinder began to bind (if at all). A revolver with an extremely tight gap (e.g. ~0.002″) might start binding very quickly as fouling builds. One with a more average gap (~0.006″) may go the entire 200 rounds without binding. Correlate this to the initial gap spec. Expected outcome: Demonstrate that a revolver with an on-spec gap runs fine, but one with an overly tight gap will seize up “dirty.” This would show why revolvers need some tolerance and why heat + fouling can induce stoppages if tolerances are too tight.
   
   

Ejector Rod Back-out Check (loose rod induced malfunctions)

1. Pre-test inspection: Ensure the test revolver (preferably a S&W model) has a properly tightened ejector rod. Mark the rod with a tiny dot of paint or marker at the factory-tight position.
   
   

2. Manipulation cycles: Perform 200 dummy reload cycles (open cylinder, spin, close, maybe dry-fire, repeat) to simulate long-term use and see if the rod tends to unscrew with normal handling. Also fire ~150 rounds live to add recoil vibration.
   
   

3. During test: Periodically check the alignment of the mark on the ejector rod. If it starts to rotate out of its original position (indicating unscrewing), attempt to open the cylinder. We expect at some point the rod might loosen enough to cause sticky or locked cylinder release. Document any instance where the cylinder becomes hard to open.
   
   

4. Outcome: If a lockup occurs, demonstrate the field fix: slightly rotate (tighten) the rod while holding the cylinder to unlock it. This simulates clearing a “backed-out ejector rod” jam. Afterwards, show viewers how to properly support the ejector star and snug the rod back down tight. Expected outcome: At least one partial unscrewing will occur, illustrating that without periodic checks a critical screw can loosen and bind the gun. (If using a Ruger, likely no issues – proving this is mainly a design-specific failure.) Regular inspection and maintenance will be underscored.
   
   

Bullet-Pull (Crimp Jump) Validation (ultralight revolver ammo test)

1. Procedure per S&W manual: Take an ultralight revolver (e.g. a Scandium alloy J-frame) and different types of defensive ammo. Load five rounds, fire four, then stop. Safely remove the unfired cartridge and measure or compare its overall length to a fresh cartridge of the same brand.
   
   

2. Check for forward movement: If the bullet in the unfired fifth round has crept forward (you might even see cannelure crimp marks exposed, or it won’t reseat fully into the chamber), that load has crimp jump in this gun. Record which loads do this.
   
   

3. Repeat with variety: Try multiple bullet weights and brands. For example, heavy .357 Magnum loads (158gr) in a super light .357 revolver are prime candidates for crimp jump; lighter bullets or .38 Special loads might fare better. Each time, fire 4 out of 5 and examine the remaining bullet.
   
   

4. Outcome: Any load that shows bullet movement is flagged as unsafe for carry in that revolver. We demonstrate one or two examples on camera, showing the before-and-after length or a gap in the crimp. Possibly capture high-speed footage of the bullets in the cylinder under recoil, illustrating how inertia can pull them out. Expected outcome: Viewers see that “bullet pull” is real – certain ammo can render a lightweight revolver unusable after a few shots. This emphasizes the need to test and select proper ammo for these guns.
   
   

Moon-Clip Stress Audit (clip bending and tolerance test)

1. Clip gauge & fit: Take a set of moon clips for a revolver (say a 9mm Ruger LCR or .45 ACP S&W 625). Measure the thickness of the clips and note the spec. Ensure we have both correct spec clips and perhaps one that’s slightly thicker or a bent one for demonstration.
   
   

2. Mixed vs uniform brass test: Load one clip with mixed-brand brass (which may have slight rim groove differences) and another clip with all the same headstamp. Fire each and record if there are any ignition issues or binding. Mixed brass sometimes fits less uniformly, causing one round to sit proud. Document any misfires (light strikes due to a round not fully seated against the firing pin) or dragging (due to a case rubbing the recoil shield).
   
   

3. Drop/bend test: Deliberately drop a loaded moon clip on a hard surface or lightly bend one out-of-shape and load it. Attempt to insert and fire. Likely, a mildly bent clip will make the cylinder hard to close or cause obvious binding during rotation. Show this on camera (e.g. the gap on one cartridge).
   
   

4. Outcome: Highlight that bent moon clips = revolver jam. Also show best practices: use a moon-clip case or holder rather than loose pocket carry to protect clips. Possibly feature a tool that easily loads/unloads moon clips to encourage proper use. Expected outcome: Viewers learn that moon clips require care – but if used properly (not bent, correct thickness), they work reliably. It’s a trade-off: faster reloads at the cost of another maintenance item.
   
   

Short-Stroke Demonstration (trigger technique issue)

1. Setup: Use a double-action revolver and two shooters: one experienced revolver shooter and one semi-auto shooter new to revolvers.
   
   

2. High-speed camera on trigger/cylinder: Have the new shooter fire a rapid DA string without emphasizing full trigger return. It’s likely they may short-stroke under speed. Capture the moment if the trigger “stacks” or fails to fire because it wasn’t reset – the cylinder will be partway rotated or the hammer not fully cocked.
   
   

3. Demonstrate vs proper technique: Now have the shooter consciously allow the trigger to fully return every time and fire another string. No short-strokes occur. Use slow-motion footage to compare the trigger finger movement between the faulty and correct technique.
   
   

4. Explain: Highlight that in the first attempt, the shooter did not let the trigger go all the way forward, resulting in a cycle interruption. Emphasize this is user error, not the gun malfunctioning on its own – but it can mimic a “jam” (a click instead of a bang). Expected outcome: Viewers (especially semi-auto users) see that you can induce a revolver failure by improper trigger control. Training and familiarity prevent this. We may even show that if a short-stroke happens, the immediate remedy is simply to let the trigger go forward and pull again – but that in a high-stress situation this kind of fumble could be fatal. It reinforces the need to train on your revolver just as seriously as any auto.
   
   

Shop / Train Smarter (What Actually Works)

Revolvers can be extremely reliable – if you maintain and handle them properly. Here are practical tips to avoid the failures outlined above:

• Keep the ejector star and rear cylinder face clean. After shooting, always brush out under the extractor star with a small brush or cotton swab. Even a tiny speck of unburnt powder can lodge there and bind the action. When ejecting spent cases, hold the muzzle straight up and briskly press the ejector rod. This uses gravity to dump cases and debris clear of the window. Develop the habit: one smooth, firm muzzle-up ejection stroke each time, and check that no crud is under the star before you close the cylinder.
  
  

• Watch the ejector rod (for S&W revolvers). Periodically check that the ejector rod hasn’t started to unscrew itself. A loose ejector rod can creep out and jam the cylinder closed at the worst moment. Make it part of your routine cleaning or pre-range check: with the cylinder open, give the rod a gentle twist (most S&Ws use left-hand thread – tighten by turning clockwise when viewed from the muzzle). If it has backed out, support the ejector star and snug it back down. Some owners put a dab of thread locker, but only do this if you’re confident – too much can freeze it in place. At the very least, know how to re-tighten the rod in the field if it ever binds up. As one revolver writer concluded after experiencing a backed-out rod, “checking the tightness of the ejector rod will be a step in my regular inspection process”. Good advice.
  
  

• Match your ammo to your revolver (especially lightweight models). Ammunition matters in revolvers more than many realize. If you carry an ultralight revolver (Scandium/Titanium frames, AirLite models, etc.), perform the factory-recommended “bullet pull” test with your chosen carry load. Load the cylinder, fire all but one round, and then inspect the remaining cartridge for any bullet creep. If the bullet has inched forward, do not carry that ammo in your gun – it could lock it up in a real fight. Try a different bullet weight or brand until you find one that doesn’t unseat under recoil. This may mean using a slightly lighter bullet or a purpose-made short-barrel load with a firm crimp. Yes, revolvers aren’t ammo-sensitive in the feeding sense, but they can be ammo-sensitive in other ways (crimp strength, primer seating, powder cleanliness). For defensive use, test-fire your actual carry ammo through your revolver – don’t assume it’s “fine because it’s a revolver.”
  
  

• Mind the B/C gap and end-shake. An experienced revolver gunsmith can measure and adjust your revolver’s barrel/cylinder gap and end-play. If your revolver binds up after a long string of fire, even when fairly clean, it might have an excessively tight gap or too much end-shake. As a rule of thumb, a gap in the 0.004–0.006 inch range is a sweet spot for defense revolvers – tight enough for good ballistics, loose enough for reliability. Much tighter than that, and you risk fouling-induced stoppages. If you suspect issues, have a gunsmith check and, if needed, set the gap to spec and install end-shake shims or a new yoke bearing to limit end-play. It’s a modest tune-up that can greatly enhance reliability under high round counts.
  
  

• Take care of your moon clips (if applicable). Bent or damaged moon clips are a known source of problems. Use quality clips of the correct thickness for your revolver (many manufacturers or third-parties offer sturdier clips). When loading and unloading moon clips, use the proper tools – don’t warp them with pliers or by twisting rounds out by hand. Store and carry spares in a rigid holder or case, not loose in your pocket where they’ll get bent. If you drop a loaded moon clip on a hard surface, inspect it; if it’s bent, discard it and use a fresh one. Moon clips can provide outstanding reload speed if kept flat and true – treat them as the precision equipment they are, and your revolver will reward you with glitch-free performance.
  
  

• Trigger discipline – let it reset fully. On the range, practice a smooth trigger stroke all the way through and all the way out. Don’t try to feel a short “click” or catch a false reset on a revolver trigger – most have none (or a misleading halfway click). The proper technique is to allow the trigger to move fully forward until your finger nearly leaves it, before beginning the next press. This ensures the internal parts reset and the cylinder advances properly. In training drills, if you ever experience a “dead trigger,” odds are you short-stroked it. Stop, finger off and out, then try again with a full stroke. Dry-fire practice can help break any habit of riding the trigger forward too little. Essentially, don’t treat a DA revolver trigger like a semi-auto’s reset – it’s a different manual of arms. With practice, you can still shoot a wheelgun very quickly, but it requires letting the trigger do its full cycle every time.
  
  

• Follow the manufacturer’s maintenance guidance. It bears repeating: revolvers are not magic. Manufacturers like Smith & Wesson and Ruger include specific cleaning and inspection points in their manuals – follow them. For instance, Ruger’s manual notes that dirt under the ejector can cause hard closing and rotation issues, and that extensive firing of lead bullets can lead to binding that a little lube in the cylinder gap can mitigate. S&W’s manual likewise stresses using only clean, in-spec ammo and keeping your revolver properly cleaned and lubricated. Don’t submerge your revolver’s internals in oil or solvent for “cleaning” and then leave gunk inside – you’ll create sludge that may freeze the firing pin or trigger. Regularly check screw tightness (with correct gunsmith drivers) – especially the ejector rod and any yoke or sideplate screws that could work loose. If something feels off (e.g. cylinder hard to open, trigger stacking), investigate before you need the gun. A well-maintained revolver will serve you tirelessly; a neglected one can and will fail when you least expect it.
  
  

Sources & Further Reading

• Lucky Gunner (Chris Baker) – “A Critical Look at Revolver Reliability.” An honest evaluation of revolver myths. Baker notes that while revolvers don’t have traditional feed jams, they do malfunction: “excessive fouling under the extractor star can lock up a cylinder… [the] ejector rod can work itself loose… a quick tap-rack-bang is not enough to clear most of these other potential problems." (LuckyGunner.com Wheel Gun Wednesday series)
  
  

• RevolverGuy.com – Revolver Malfunctions Series. A wealth of detailed articles on wheelgun failures by Mike Wood and Justin. For example, the “Under the Extractor-Star Malfunction” piece describes how a few grains of powder can jam a reload, and the “Backed-Out Ejector Rod” article shows a real case of a S&W 686 locking up until the rod was re-tightened. There’s also a comprehensive roundup of revolver stoppages and how to prevent them. These are must-reads for revolver enthusiasts interested in reliability.
  
  

• Ruger Super GP100 Owner’s Manual – Official guidance. Even Ruger, known for robust revolvers, warns: “If lead bullet loads are fired extensively, lead build-up may cause cylinder binding.” They also emphasize keeping the ejector and its seat clean to avoid “hard closing of the cylinder” and rotation issues. (In short, the factory acknowledges revolver stoppages in their manual – so should we!)
  
  

• Smith & Wesson Revolver Manual – Ammo selection test. S&W explicitly instructs owners of their lightweight revolvers to perform a bullet crimp-jump test: “Carefully inspect the loaded round to determine if its bullet has started to unseat… If it has, you should not use the tested ammunition in your revolver. Choose another projectile weight or brand… until you find one that does not unseat.”. This is cited in the S&W AirLite/Ti series manual and is essential reading for anyone with a super-light snubby.
  
  

• Shooting Times – Revolver Timing and Carry-Up. Shooting Times has published guidance on diagnosing timing problems. In essence, if a revolver’s cylinder isn’t locking up before the hammer falls, you’ll get misfires or lead spitting, and it needs fixing. One article explains that an out-of-time revolver may fire with the chamber misaligned, with potentially “dramatic” (dangerous) results. It also covers how to check each chamber for proper carry-up. (See “How to Time a Revolver” by Gunsmith Patrick Sweeney, Shooting Times.)
  
  

• Grant Cunningham (via Armed Citizens’ Network) – Revolver reliability insights. Renowned gunsmith Grant Cunningham has written and spoken about revolver reliability. He advises keeping barrel/cylinder gap in the .004–.008″ range for defensive guns, as tighter gaps can cause binding when dirty. He’s also noted that proper maintenance (tightening screws, moderate lubrication) is key – most revolver “malfunctions” stem from neglect. (Reference: Grant Cunningham’s revolver blog and Armed Citizens’ Network archives, 2010–2013).
  
  

• USCCA – “Moon Clips: What Are They and How Do They Work.” An article by Bob Campbell (USCCA, 2024) covers the use of moon clips in revolvers. It highlights that “moon clips… can bend easily if mishandled. A bent moon clip can cause the revolver to jam or misfire. It also offers best practices: use tools to load/unload clips and store them in holders to keep them flat. If you use a moon-clip-fed revolver for defense, this is recommended reading to avoid clip-related issues.
  
  

(Additional references: Forum threads on Smith-WessonForum.com and TheFiringLine.com provided real-world malfunctions and fixes from experienced shooters. The Lucky Gunner Lounge and RevolverGuy articles, in particular, are highly recommended for deeper dives into each failure mode.)

Bottom Line

A well-made revolver is an extremely reliable firearm – but it’s not magically infallible. The old revolver adage “Six for sure” holds true only if you do your part: keep the gun clean, the ejector star clear, the screws tight, and use the right ammo. A revolver will “never jam” in practice if you diligently prevent the known failure points (and there are a few). However, ignore maintenance or push the limits (lots of rounds without cleaning, loose parts, incompatible ammo), and a wheelgun can and will jam at the worst time – and clearing it might not be as simple as a tap-rack. Treat your revolver as the life-support tool it is: test it, maintain it, and train with it. Do that, and your wheelgun will run like a war drum – a trusted partner. Neglect it, and you may find even a “simple” revolver can let you down when you can least afford it. In short: revolvers are rugged and reliable, but they aren’t magic. They require care and awareness of their unique quirks – just like any other firearm. Do your part, and the revolver will do its job, every time.