Yep. Above is correct.
The base of the bullet "obturates" - uhh, it expands up, sealing the base of the bullet against the barrel lands n grooves. It basically maximizes velocity and accuracy, while minimizing barrel leading (if applicable)
It does, however, have a drawback. When loaded too hot, they will over-obturate - distort, if you will - potentially causing barrel damage and other issues. The least of which, being a very inaccurate round.
__________________
Gun control laws benefit only criminals and politicians - but then, I repeat myself.
Life Member, National Rifle Association
|