I have also used the 125 Vortex,but have switched to rocket steel heads.Jason N got it right you need alot of energy to push that much resistance threw a deer.Had a hunting partner shooting a 55lb. draw weight and a 100gr. Vortex loose a deer with a good quartering shot(found the deer 1 week later[:' (].Not enough energy to open blades and get a pass threw,deer was only 17 yards away when he shot it.Wider is not always better 1 1/8 is plenty to kill efficiently.I found arrow placment and penatration are the most important factors.Good Luck.