I just used up a couple of boxes of factory 405 gr Remington and man, they are fun to shoot and real easy on the shoulder ! I try to duplicate the load as far as velocity and bullet weight but with hard cast and IMR 4198 powder going about 1300 to 1350 fps ! I also hunt with 300 gr factory ammo made by Fusion or Remington thinking the loads are a bit flatter shooting and have harvested a few whitetail deer out to 150 yards or so with it ! I know you can buy way hotter loaded ammo (E.G. Buffalo Bore ) and of course my lever action and Ruger #1 can handle hot handloads that make most of the factory stuff look feeble....I am just wondering if there is any reason to do this ? I did load some 350 grain Hornady RN fairly hot just to experiment and could definitely feel the added recoil compared to my favorite 405 gr hardcast loads ! I suppose the hotter loads would be better for game larger than deer and average sized black bear ! I'm just a big fan of the 45-70....so please share any experience with the loads you use , thanks !