I have been looking at some of those 45 cal. air rifles that come pretty close to centerfire velocity. Heck, I can use my 45acp mold for it too. The price is a little steep at 700$ for an airgun, and on top of that you need one of those fancy 6000psi air compressors along with a scuba tank to fill it. I watched a video where I guy took a Buck with one out of a tree stand so they have some knock down power to them. Might be worth investing in.