Since they came on the market in the 70s I have been shooting 3 Blade Rocky Mountain Razors, 125gr. 2 years ago I went to the 125gr. 3 Blade Rocky Mountain Ironhead. I have taken Whitetail, Mule Deer, Black Bears, Elk, Buffalo, Caribou, Wild Hogs & many other biggame animals with excellent results. My Brother & son shoot the 3 blade premiers & 2 of my friends also switched to 3 Blade Rockys after they saw what mine did on a hunt.
They always fly excellent for me-just screw em on.