Back visiting here- Rob from Ar and and myself have been testing our 12GA FH. First the cases are built on bmg brass we put rims on , that match 12ga. Next chambers will take our 3.85 iinch case as well as shorter shotshells. We both have rifled barrels, and these are mainly high speed slug guns. Rob's is built on big Borchardt falling block action and can be loaded to 55-60,000 psi. Mine is on a 12ga Savage 210 bolt action, and is loaded to 35,000 psi. We both have heavy barrels.Rob got a 750 gr banded brass slug to 3000 fps, and a 7/8 oz saboted bullet to 4300 fps.I got a 730 gr hardened lead Dixie bullet out at 2700 fps and a 3/4 oz saboted bullet out at 3900.Ed.
