Hey guys.I could use a little help again. I have been loading the 7.62x39 for my AK and today when I came home from trying out some new loads I see the brass on the ones I used the 4895 (IMR) had dimples in it. All but about three out of twenty five, the necks where dimpled. I just started fulling around with reloading rifle boolits a month or so ago. I have loaded tons of handgun loads in the past.I started out with 4227 (IMR) 17-18 grans. I shot some of them today and no signs of this. I made some rounds for the first time using the 4895 @ 21-22 grans and I see the dimples. I have been using fed brass CCI LRM second time through brass. These loads didn't seem to be over pressured.I'm sure one of you have come across this before. If you can help me out here it would be great. I forgot to tell you I'm using the Lee 312-155-2R.
Thanks Bill