cisco
Member
I have found an accurate load for my AR15 that uses a 52 grain bullet with no crimping grove. I have loaded several of these in a 20 round mag and fired them with no trouble until today. I had fired a few rounds and decided to remove the round that had chambered and check it out. The bullet had been pushed back into the case until it was almost totally inside the case. I had not noticed any signs of pressure on other rounds as I was looking at each empty piece of brass as soon as I fired them. I did not crimp the bullets when I reloaded them. My question is should I? If I need to crimp should I use the standard crimp that my Hornady seater die has or do I need a taper crimp? I tried to crimp with a taper crimp tonight but when I thought I had enough crimp the case shoulder bulged. Too much crimp, so I back it up a little until it did not bulge the case, but you could still push the bullet into the case pretty easily. There must be a way to do this, but I can find no info on how to do so. Any help will be greatly appreciated. My load is 22 grains of H4198 with a Sierra 52 grain HPBTM bullet using various cases. It shoots so good that I would really like to use it but not if I am going to push the bullets back into the case. Thanks-