has anyone else had the problem where a die is perfect in every aspect b4 heat treating and afterwards the cavity is tapered? i reamed a die today and polished it a little b4 heat treating it and everything checked out, after i heat treated and did the quench the die has a taper to it where it gets bigger as you go towards the opening and the bullets are coming out tapered.. supposed to be another .308 die but the bullets it is making is tapering from the front of the flat at about .307 and .309 at the rear.. i guess that is why they make laps that you use after the heat treating..