Like a lot of people, you have the common misconception that bullet de-stabilize when they slow down. That's only true when they drop to transonic velocities, down around 1300 fps or lower. At velocities higher than that, they actually become more stable as long as they were stabilized to start with.
So if the bullet is rotationally stable when exiting the muzzle it will continue to be so unless some outside force messes with it? Good to know. I was operating under the assumption that rotational velocity would eventually slow to the point the bullet would lose stability and begin to tumble. I learned something new today!
The transonic velocities you mentioned would be the bullet passing from faster than sound speeds to slower than sound speeds? I remember reading something about 22lr ammo destabilizing when doing this due to turbulence that occurs at this threshold. Is this the same phenomenon?
