I did want the answer to come from someone who has shot them in a contender. I know they aren't suitable for the Handi, the velocities are too high. I'm shooting them out of a 10" contender, and I finally chrono'd a few. Getting about 1800fps out of them and a lot of muzzle-flash so I am gonna assume that they are loaded pretty stout. Brass looks good though. Hopefully if I'll be able to let ya'll know how they do on deer, I'm planning on killing something this week!