IMO there is nothing wrong with quality mechanical broadheads. I think the problem comes in when the bow does not have enough KE for its design or the design itself is inferior. I shoot a Mathews Chill @ 63# and shoot 100 gr Rage Hypodermic and have yet NOT to get a pass through. My daughter-in-law shoots my Martin Monster Buck Hunter @ 50# and I have her using Muzzy Phantom 100 gr BHs. She's take 2 nice size doe with complete pass throughs.