Thread: Dpms r25 reloading help

Factry rounds are fine,new reloaded brasss is fine,once fired reloaded brass is the problem.I have put the shell holder in the lathe while this solves the problem the case is getting dimples in the neck from the case going to far in the die, Back the die off and the caes is not sized enough for this rifle.The once fired reloaded brass will chamber and extract in other types of rifles.My oal is 70.94mm or 2.793".I am getting no grooves on the bullet and I doubt seating depth is to blame as the cartridge would fail to fit in the magazine before it would even come close to touching the lands.Some brass is very tight in the shell holder could the load be to hot and cause expansion at the base area?The primers are showing no signs of excessive pressure.Fired unsized brass is fine and extracts easy enough.