Originally Posted by
Hogtamer
RMc, please consider and comment. I have "true" OO from COWW (.334 @ 54 grn each). In a 12 ga. I can make a stack of 3 per layer not using a shotcup but a thick Mylar wrap on top of a BPI x12x op seal and a 1/4" felt wad on top of that. How would you expect this to perform with regard to setback and deformation? I will be using slow burn Alliant Steel with charge weight per Ed Hubel. Also, how should wrap perform vs. a shotcup pattern wise? And how would buffer effect if at all? I appreciate your shared insight greatly!