We (me-brother-son) have taken Black Bear, Caribou, Elk, & many species of deer PLUS the toughest of all-WILD HOGS. I use the Rocky Mountain 125gr. Razor 3 blade & they use the 100gr. 3 Blade. We shoot our broadheads into 3-D deer target for practice all the time-they are extremy tough-we have no problems with flight or anything when changing arrow shafts or bow weights. I cannot say enough good about them-thats how " WE" feel. good luck