Projectile velocity:
Ambient air temperature has an inverse effect on air’s density. As the air’s temperature increases, its density decreases.
Ex:
"If you’re shooting 175-grain Federal Gold Medal Match bullets out of a .308 Win. rifle at about 2,600 fps on a 55-degree winter day, you can expect about 223 inches of drop from your 100-yard zero at 800 yards. If you didn’t get back to the range until it was 95 degrees in the summer and you expected to make an adjustment on your scope to account for the 223 inches your bullet previously dropped at 800 yards, then you’d miss where you were aiming by about 10 inches. " -
x = v0x√2h ÷ g, this formula is the easy way to calculate it, but is without the drags.
x = vx0t − CρAv2 t2 ÷ 2m, this one is use more in the real life, because it is incorporates drag.
C is the drag coefficient of the bullet, p is the air density, A is the area of the bullet, t is the time of flight and m is the mass of the bullet.
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