I have a 4" Blackhawk in 44 mag that I can't get to shoot 300gr or bigger rounds with any consistency. If I drop down to a 240gr load I can group under an inch at 20 yards fine. I was hoping to get the same out of a heavier round. I'm relatively new to hand-gunning so idk if its just me or not. Am I expecting to much out of a factory loaded "buffalo bore" round. All so they seem to drop down and fly left if that helps. Best groups are around 5" or so.