Most problems with mech broadheads is that people shoot to lite of an arrow. I have shot spitfires for five years and gream reapers this years. I have shot deer from right under me out to 46 yards. Have shot 18 deer with them, all past throughs but one straight down that hit the spine. My finished arrows weight any where from 400 to 440 grains. Shoot a heavy enough arrow and you should not have any problems. People every year with all kinds of broad heads have problems. Should what you perfer. But good made mech work great.

Scott