I was practicing a little with some new to me grizzly broadheads this evening. Have never shot this type of head mostly 3 blade such as snuffer, vpa, and muzzy. When I shoot my block target with the vpa's they penetrate to the feathers almost every time. When I shot the grizzly it went all the way through the target and stuck in my backstop about 6' away. When I tried to pull it out I noticed it had went through the 3/4" stall mat and into the 2×4 frame about 1/4"! The broadhead still looked brand new so can't wait to try these out on a deer and maybe a hog!