There's a good list of outfit's to do this type of work. Here's my short list in no particular order.
Mike Orlen
Kirk Merrington
Briley's
Skeets
The underlying question as always is; Why not just accept the gun as it is & not anticipate altering a gun you haven't even inspected or shot yet? IMO opinion we in the shooting community stress out a little more than we should about choking in the average shooter shot gun. The equation changes when we're talking about competition shooting at a higher level. I would experiment with different loads and see how the gun actually patterns before I would consider altering the chokes. Gun fit may be more important for being able to hit the intended target than choking. Just my 2 cents, it's your gun & money, good luck with it & may you have many great days enjoying it.
