Tom,

I shoot the RSM in Rigby and think it to be a great rifle for the $$$! It is heavy enough to tame the bigger guys based on the Rigby case. I think the Rigby is plenty sufficient for a magazine rifle IMHO. Since I don't consider a bolt action to be a stopper, I feel it doesn't need to be any bigger.

If I had a second RSM, I'd probably try what you suggest...just for shits & giggles...bigger sure doesn't hurt when facing down things that don't particularly like you shooting at them...

I would probably go the rebore route...

I shoot 'yotes out my bedroom window with the 416 and Speer 350's...my varmint gun...is this an Epiphany as to its virtues as is...???