ctafoya Report post Posted January 31, 2019 So, with my new M1A in the safe, I need to start reloading for it. I reload all of my bolt action rifles, but have stayed away from reloading semi auto. I've always heard that you have to crimp for semi auto or the force of the recoil could unseat the projectiles still in the magazine. Makes sense, but I would think my magnum bolt guns would do the same. Is there a reason not to? Share this post Link to post Share on other sites
PRDATR Report post Posted January 31, 2019 If the bullets have a cannelure then crimp. 1 Share this post Link to post Share on other sites
MMACFIVE Report post Posted January 31, 2019 I load both the same... no crimp. I don’t crimp if I don’t have to and then it is with a tapered crimp die. Share this post Link to post Share on other sites
metau Report post Posted January 31, 2019 Never had an issue with not crimping my AR loads. I suggest using small base dies. 1 Share this post Link to post Share on other sites
IA Born Report post Posted January 31, 2019 I've never crimped on the loads I've put together for my M1 Garand and never had a problem with the rounds stacked and waiting. Share this post Link to post Share on other sites
jeffro Report post Posted January 31, 2019 No crimp here. Share this post Link to post Share on other sites
ctafoya Report post Posted February 1, 2019 A little more info, I plan on shooting 168GR HPBT sierra match kings(no cannelure)with once fired lake city brass, CCI#34 primers, and an undetermined charge of H4895. Seems the consensus is no crimp. Share this post Link to post Share on other sites
Mike S Report post Posted February 1, 2019 No crimp. You will want to bump then shoulders a little more than for a bolt action (.003-.004), but case life is short enough with an M1A you aren't giving anything up. Share this post Link to post Share on other sites
Mike S Report post Posted February 1, 2019 You will also want a hard primer cup. Share this post Link to post Share on other sites
lancetkenyon Report post Posted February 1, 2019 No crimp.here either. And I use match primers. Share this post Link to post Share on other sites
ctafoya Report post Posted February 2, 2019 Thanks for the info. Got my small base dies ordered. I'll give her a shot without crimps. Share this post Link to post Share on other sites
brent Report post Posted February 2, 2019 I would recommend reading the free downloadable pdf's by Zediker. Reloading for the Match M14 - Zediker Share this post Link to post Share on other sites
roninflag Report post Posted February 2, 2019 I reloaded and shot nearly 2500 rounds in a year through my garand . no crimp 2 Share this post Link to post Share on other sites
ctafoya Report post Posted February 2, 2019 3 hours ago, brent said: I would recommend reading the free downloadable pdf's by Zediker. Reloading for the Match M14 - Zediker Good read. Thanks for the link. Share this post Link to post Share on other sites
