You want to try a big stopper? It's my 444 Marlin. I have it in a Marlin rifle. My moose was about 85 yards away. I'd called him into a clearing. He was yelling "where is she, where is she? I raised my rifle to his chest and fired. The big bull turned to run and dropped in his tracks. The 400 grain round nose had stopped him before he could change his mind. That's the story and I'm sticking to it. If you want a sure kill try a big, slow moving slug in the chest. Try that, with a home sighted Leopold 1.5X5 on it. You wil stop worrying about MOA micro accuracy and loctiting your scope screws!