Used since 2003.Hunt the midwest and 1 other state.Have take 2 booners and 5 other good deer over 155.This fall took a good 10pt at 20 yds, 1/4 away,blades all stayed shut.Good thing I doubled lunged him he bleed well 70yds slowed way up,he went a total of 130.Took a few others in my home state they worked great 11 out of 12 i think.But thats not good enough for me.Going back to a fixed blade (Posted on 12/5/09)