Thanks evlblkwpnz, I thought it would work ok but wanted to know if anyone else has done it. I usually keep a modified choke in my shotguns for all around use and thought if the SBS would accept them it would make it more usefull. I use a Winchoke adaptor on the gun now at 19" and have all the chokes from I/C to x-full so I might see if my gunsmith will thread it internally after he cuts it down.