The proof is in the pudding, Lloyd. I've altered chokes on a few and changed the barrel length on a gun that had a Cutts on it. My experiences have been good, and I'd do the same thing to both guns today all over again. I still own them both. My Dad opened his full choke A5 to modified when I was a kid, and shot it just as poorly as he did prior to that operation.
I suspect shotgun barrels are often unique unto themselves. There is a lot of hit or miss out there (pardon the pun) on modification to them.
Best,
Ted
