There may be good reasons to do this in Europe, say from 2 1/2" to 2 3/4". The gun can be reproofed and the owner will have a wider choice of cartridges. It becomes a whole nother story when that gun comes to the US. I like sixteens and light twelves but I won't even look at one that has had it's chambers deepened. The reason, I have no way of knowing how many standard SAMI loads it has fired. If the chambers have been deepened in this country without reproof it's even more suspect in my eyes. Without doing a barrel profile you just don't know what the story is. Of course theres also the issue of European guns with original 2 3/4" chambers proofed to CIP standards. Again, how many thousands of SAMI rounds have gone thru 'em? But at least in this case one is fairly safe in thinking that there's enough metal at the chamber's end. It's not that I care inordinately about my fingers, it's just that no matter how you cut it, removing metal from the chamber will weaken the barrel.
npm
