Recently started hunting with a crossbow. I have a Excalibur x-bow and and looking to get some broad heads. Are the Bolt Cutter 150 grain fine for deer? A little searching says that some folks think the 1 1/16 inch cutting diameter is too small and will result in lost game. I see some of the mechanical broad heads are sometimes over 2 inches in cutting diameter. Is it a big deal or is good placement the key? Thanks.