good luck finding powder right now. I found the best powder to be #7 but use what you can find. you are still under max on your loads and can get more if you really want to, i am getting 2000 fps with mine, the recoil was stout as you described until I put a brake on it and now it is a pussycat. with that said it will kill anything you shoot with it at reasonable ranges. good luck with your 375 and post pics when you kill.