So I've been snooping around here a bit and doing quite a bit of reading and watching the videos. I'm getting ready to start reloading the bushmaster and have been getting all the stuff together to do it. As a side note i've been reloading 20+ years and dont use any factory ammo in any of my own 15+ guns, well except .22's lol.
Anyway my question on the lee side crimp die. Where did you guys come up with cutting off a half inch? And then why use shims? I get it to be able to put severial crimps on one case but does anyone do this? Why do this extra step? I work as a manual machinist so cutting the die down is no big deal. I plan on cutting it down the difference in length of the 45-70 to that of the 450b. So it puts the crimp at the neck just like it would have done on the 45-70. Any reason not too?? Am i missing something?