I normally have no problem maintaining +/- .002 COAL with other cartridges, but for some reason .300BLK is giving me fits.
125gr matchkings call for 2.210 COAL. I can produce 3 or 4 good rounds and then it will produce a short one (minus as much as .008 to .010) and then turn around and spit out another round that's right on the money. I tried to press exactly the same every round.
I'm using brand new RCBS dies and new brass. Any ideas?
125gr matchkings call for 2.210 COAL. I can produce 3 or 4 good rounds and then it will produce a short one (minus as much as .008 to .010) and then turn around and spit out another round that's right on the money. I tried to press exactly the same every round.
I'm using brand new RCBS dies and new brass. Any ideas?