I am in the same boat. I was looking at new 44 Mag revolvers when I happened onto a Raging Bull in 454. Now I don't know. The 44 Mag is a long time favorite of mine and kills deer like the hammer of Thor. For practice you can shoot reduced loads or 44 specials so it also has the same benifit as firing 45 LC's in the 454. The Raging Bull is one heavy revolver and I would have to have to pack it to far but it should be a heck of a deer and Black bear round. If you are buying ammo and are not rich, I would stay with the 44 Mag. If you load, toss a coin and be happy either way.