Ive measured all the Sherman fired cases. I cant speak to the others. I think the 72.7 for the SS was the old chamber. The B chamber is right at 72. The Max is 77 and the MEGA is 84.
thats H20 level at .005 trim.
Hi Steve.....Thx for the good wishes! Yes, the new .470 case will begin as a 7mm and will no doubt be offered in the smaller bores as well. Watch for data coming from Derek, the new owner on what it is and what it does.