Random Chronograph Results

I needed a place to deposit Chrony results. I've got a lot of paper notes to digitize. Probably gonna be somewhat unorganized. Tap on picture to get larger version.

223/5.56x45

Winchester Power Point handloads. The ES suggests that maybe the load could be warmed up a bit more. But this is a good 200yd max deer load.

Sierra 77gr TMK handloads

24gr of TAC left the brass just fine. No ejector marks.

23.2gr of 8208 is book max (55k psi), 23.4gr is over max - brass looks fine - no ejector marks. Temp was 75*, 16" barrel.

27.5gr of CFE223, CCI450, 55gr Hornady fmjbt, 2.2" COL, 35*F

70gr Speer SP to hopefully be used for deer hunting. Also tried Fed 205 primers which might not be zippy enough for TAC and H335.

I don't know what was happening with above Xterminator loads - I expected 24.5gr to be significantly faster than 24gr. Maybe it was the 30°f temperature affecting both the powder and my Chronograph.

9mm

Velocities from a KelTec PF-9, 3.1" barrel.

40S&W

All data based on an M&P40 Compact 2.0 4" barrel.

SAAMI COL is 1.085" - 1.135". But that won't work with 155gr LSWC. So I loaded my first test batch to 1.15". I was more interested in the powder's sensitivity to different primers. But there were some FTFs.

COL of 1.16" runs flawless. COL of 1.17" works in the M&P magazine.

The Silhouette loads will tighten up if I use a standard primer like the Rem 1 1/2. Otherwise I will have to figure out a way to increase neck tension, or run them much hotter.

Misprint - it is really 9.2 grains. The Longshot load came in as expected, but I am using a mag primer. Brass looked fine. Primers fine. Not sure what I need a 1300fps 155gr swc load for, but I have one now.

Note: I did find leading in the last inch of the barrel - classic lube failure. I'll have to check a little closer to find the velocity where it starts. Hi Tek isn't perfect.

Just can't squeeze enough Enforcer into that Speer case. 13gr wouldn't let me seat the bullet below a 1.7" COL. Very low pressure. You could load safe Enforcer loads without measuring powder - but it needs a mag primer.

Things don't always make sense. I changed primers - thats it. I expected a velocity drop, but I  never tested Longshot primer sensitivity before. I measured it 3 times, put a new battery in the Crony, changed orientation to sun - but still came out in the 1300's. Leads at the muzzle.

I tried different once-fired brass - CCI Blazer. But these bullets were also Alox coated, which tightened the ES and probably increased the velocity a smidge.

I reduced the load from 9.2gr to 8.5gr - my goal was to get into the mid 1200's. I missed. The follow velocity uses the same alox coated bullets, primers, COL, brass, etc. 

30-30

32.5gr H4895 pushing a 150gr Winchester power point - nice load. WLR primers, Winchester brass.

44mag 

6.5gr Clays behind a Missouri Bullet Company's 240gr Keith lubed with 45/45/10. This is the upper limit of a comfortable plinking load with the 329pd. 4" barrel velocity. WLP primers, mixed brass. Loaded on an SDB.

45acp

9.0gr of Longshot is not amazing pushing a 185gr XTP - I was expecting a solid 1100fps. But the same charge pushing a cast 185gr lswc did give a solid 1100+fps. WLP primers, mixed brass.

270 Winchester

Experimenting with Ramshot Hunter.

Mixed brass. WLR. 130gr Speer Hot Core.

54gr of H4350 gave ~3000fps pushing a 130gr Hornady Interlock from a 24" barrel. Load has performed well on two Elk. However, H4350 may not be available anymore. WLR primers, Remington brass.

308 Winchester

125gr light loads using H4895.

I wanted to run this 125gr Speer TNT at around 3000fps from the 20" barrel using IMR8208xbr. WLR primers, once-fired Starline brass, COL=2.7"

Hodgdon load data is a nice start, but I always back off a bit and gather some velocity data. Here I tried two 150grbbullets with 43gr of IMR8208xbr. The velocity seems sane, the brass/primers look fine.

WLR primers, once-fired Starline brass. The Hornady Interlocks have a COL = 2.7", the Nosler 150gr Ballistic Tips COL= 2.8".

45-70

46.0grs of H4198 pushing a 405gr Remington JSP gave the desired ~1800fps. This is with starline plain brass which has larger capacity than Remington Nickel Plated. H4198 is my favorite for this cartridge.