ive killed two deer this year with them and both times the arrow went through. the first,doe, it went through two ribs (one on each side) and deep into a deed log. then my buck it went through and burried itself into the ground deep enough that i couldnt find it. they have held up very very well durring practice when i hit the tree behind my target and when hitting eachother. i also noticed tighter groups then my goldtips, i shoot so well with them ive extended my effective range from 35 to 50yrds.