Hi everyone. I've been reading here for a while and soaking up a lot of great info. Got a question for ya.
I have an 18" GLFA upper on my Aero precision AR15 carbine lower.
I'm reloading Hornady 250g FTX bullets into once fired hornady brass, Lil Gun and H110 powder, CCI450 primers and crimping to 0.473" with a Lee Factory Crimp Die(not the seating die). The problem is that my bullets are moving forward in the cases when they load into the chamber from the magazine. (ie. when the bolt slams them home) I loaded my last batch at 2.235"OAL with crimp. If I cycle them through the action they come out around 2.252"OAL
2 Questions:
1: When sizing, I am bumping the case neck tighter from 0.480" onece fired to .475" sized. Should I re-size smaller/tighter to get better neck tension? Would this keep the bullet in place better, or just over work my brass? The bullet is not loose in the case when loaded.
2: Will a modified 460 FCD side crimp fix this? From what I've read they have been useful for keeping the bullet from pushing INTO the case. Is it effective to keep the bullet from jumping OUT of the case also?
If this has been coverd I apoligize. Please send me in the right direction. I am hesitant to go buy more dies and cut them without making sure that's what I need. Thanks, Matt.