Took my Marlin stainless Guide Gun up to the range with a new load this morning. I beleive I have found the round it likes. A 300 grain Hornady HP over 53.1 grains of RE-7. Makes a 5 shot group that fits under a quarter. The recoil is pure hell. I have cleaned up the action and have got the trigger nice and smooth. I have a leupold scout scope on it to help my eyes out. BUT that stock recoil pad has got to go !