I realize it would only be a ballpark, but what kind of pressure would a 2 1/2 brass shell loaded with 70gr FFG GOEX, Nitro card, 1/2" fiber wad, 1 1/8oz 7 1/2 shot and overshot card produce in a New Ithaca Gun Company 12 gauge hammergun? Gun is in good shape, tight and has some minor pitting in otherwise shiny bores. There is a similar discussion, of sorts, taking place on another forum and the anti-damsacus/twist crowd is chiming in big time. There is much more imperical data being provided here. Thanks!