Bob, Good to know regarding Retumbo. I honestly need to give the 7mm Rem a better try. I will admit to having less time and therefore (or is it therefor in attorney) give up on a rifle if something doesn't work within 3-4 loads.
I have a 6.5 pound FN Mauser in .375 in a Bansner that I have been thinking of doing something with. That may make a good Mashburn if I can find a smith willing to work with a Mauser.
