Shackleton,

As to your question on the 10 gauge versus the 416 or 458--I have a 10 gauge double that I used to use for shooting geese in N Dakota over decoys--it is a heavy double but I have to say the recoil is less of it than any of my .416's or .458...Again however,, stock fit and weight of the gun makes a huge difference--get one that fits and it's not bad at all..actually enjoyable in moderation..

Ripp