PCed only works great in my .45-70. 405, 450 and 500 grain boolits. Some made for GCs some not. I donít see any difference.

However, I canít hit a darn thing with my 6.5 x 55 mm without GCs, PC or not. Probably because it is a GC base. I figure with the bigger .45 cal. boolits, the difference in the diameter at the base doesnít matter much compared to the 6.5mm. Plus it gets pretty much filled in after PC and sizing. It is also going slower. Could the Micro Groove barrel make a difference?