Thanks for all the really good input you guys have given me. I really would like to shoot a heavier bullet, and the 404 would do the job with a 400 grain. The recoil would not be that bad, and I could have the gun built a little lighter. The 375 H&H would be the best by far for getting ammo, which can be a big thing and still be able the get the job done. The 416 Rigby, which is my favorite caliber, has more recoil and is a bit heavier. I still can't seem to make up my mind, I know what the gun is going to look like, but I am still having a hard time figuring out which caliber. When I started this project I didn't think it was going to be such a hard decision.