Going through basic in the Vietnam era we were told by our D.I. about the tumble effect. When did they change the rifling pitch rate?
I think it was with the M16A2.They had to to stabilize the heavier bullet they were adopting.Now they bullet stays point on and inflicts a small wound,especially at longer range.The short barrel on the M4 means the muzzle velocity is down to about 2800 fps.I’ll take my original M16A1 any day over the newer guns.Or better yet,my M1A.Now there’s a rifle.