Hey there all,
I got some 52g match hollowpoints from Hornaday but they don't have a cannelure like the 55g FMJs I usually load. I was wondering if I need to go to a lighter crimp on these bullets, and would the crimp I'm using for cannelure bullets create dangerous pressures and/or deform the bullet during crimping? I would just not crimp, but it's a semi-auto, so I kind of have to.
A second question involves case capacity. I've been using RP brass for a while, but I bought a case of PMP ammo to get fresh brass. When I reload it with a charge that doesn't fill the old RP brass, it just about comes up to the top of the PMP case. For the record, I weighed the charges and they are the same. Is it common for case capacities to vary this much between manufacturers? Lastly, since there is no air space in the PMP cases, have I created dangerous pressures again by compressing the load a little when I seat the bullet? Thanks for y'all's help (hey, I'm in Texas)
John