Thread: Effects of cartridge temp on velocity

Originally Posted by stug

How about this, how does the air pressure effect the muzzle velocity? Does it have any effect. My first thought is that a lower air pressure (higher air temp) would give a higher muzzle velocity because there is less resistance in front of the projectile in the barrel. Or is it such a small factor the friction between projectile and barrel negate it?

Not sure if it effects muzzle velocity too much but higher and lower pressures effect POI at distance.

You can see it on a ballistic calc with a 10 or 20 mb change.
So my dumb logic says the denser the air the faster the projectile loses velocity And vice versa?







Sent from my SM-G935F using Tapatalk