A while back I bought a Lee C312-185-1R (advertised as for the 303 Brit) mold to use for my 303s and a 30-40, and I cast a batch but haven't sized them yet. Yesterday I miked them and they are sure enough .312" (they weigh ~180 gr, I cast them fairly hard), and that raises questions in my mind: since 303s are almost =/> than .313", what's the deal? They are GC design, so is that supposed to keep leading down and make everything o.k.? I haven't cast a whole lot lately, and my interest was just getting back up to the "doing" point, but now I'm aggravated. And should I size them to .310 or .311 for the Krag, or just run them through a .312 sizer to lube them & seat the GC and see what happens? I think I'm answering my own question, but I would really appreciate your input...
Thanks,
George J.