Very interesting... Since my previous post I have sold my Guide Gun and replaced it with a Rossi 92 in .44 Magnum. I still load .45-70 for a friend who insists on heavy bullets and high velocity. We shot his Guide Gun just yesterday and he loves to let other shooters at the range use it so they can experience the recoil. Well, all the brass is starting to show signs of case head separation. He never sorted his brass or kept tabs on how many times they had been fired and now he may as well throw them all away. So yeah, you can hot rod the .45-70 but you pay for it with case life, just like with everything else.

Dave Sinko