I just got my white mountain carbine. Now I need to find a load for it. It's gonna be a short ranged "bush gun" 50-75 yd shots max. I would like to shoot conicals out of it. Problem is, I'm a little apprehensive about pulling the trigger on a 6lb gun that has a 400grain slug stuffed in it. I'm thinking 300grains is about as heavy as I wanna go. Any suggestions? So far, I've done a little shooting with 275 grain maxihunters and 70 grains ffg goex. I could bump up the charge on those and still be comfortable.