2-piper, I'm not sure what you're talking about. I use adjustable reamers that a fellow gave me or ones I buy from Brownells. They would have to cut on the front edge where it's sharp. If you're jug choking a barrel with no choke, then what you measure at the end is what the barrel in back 6 or 8". If it's .050 thick at the muzzles and it only has a IC choke, or .015 constriction, then the walls farther back are .035. If .005 on a side was removed it would be .010 more, or now a IMP/Mod. I'm not saying any barrel can be jug choked. It's up to each owner to decide if it's possible. But as said, there's not a whole lot of pressure left and you aren't gonna blow the barrels. Maybe dent them, but I'm still shooting the ones I did with no problems.
