Originally posted by lasersailor184
Well, the longer the barrel, the more distance the gun powder is pushing on the round. Less distance = Less speed (to an extent).
I.E. An M16 with 20" barrel is going to shoot faster than an M16 with a 4" barrel.
However, you can't keep increasing the barrel length and expect it to go faster.
Is it speed or accuracy that is effected by barrel length ?
Doesn't a longer barrel mean more spin on the round due to being expose to more of the the boring in the barrel ... which then translate to better accuracy at longer distances ?
The faster a bullet spins, the straighter is flight path is over distance ?
I would also think that the longer a bullet spins in a barrel, the more friction it will encounter, which would slow the bullet down ? (same bullets just different barrel lengths).
Shoot duplicate .38 rounds from a 6 inch barrel and a 2 1/2 inch barrel at 50 yards and tell me which one is more accurate.
Is the round from the 2 1/2 inch barrel travelling faster than the one from the 6 inch barrel ? I don't know ...