1911roben
Maybe, some of the things to consider are:
1. Is the barrel in question a ramped fully supported type?
2. Do you reload or will you only be shooting factory ammo? if reloading use either Star Line or ArmsCor supercomp brass ( Winchester 9X23 brass is way over engineered in the web area to allow it to be shot in the Colt pistol without a supported chamber)
3. Will you want to switch back and forth between the .38 Super and 9X23 ? I recommend installing a AFTEC extractor from Brownells (
www. brownells.com) part #466-001-009. If you try to use the stock extractor it will have to be tuned for the rimless case and switching back to simi-rimed will detension it causing it to need adjustment often. Bottom line the AFTEC extractor is well worth the $ weather you switch back and forth or not.
4. As to a new barrel? you will have to insert a 9x23 round and feel for the tightness of it in the chamber especially at the rear, if it slips in and out easily it can be shot after the extractor is tuned or replaced to accommodate the rimless cases. If it is tight the chamber can be reamed for 9x23 and still shoot .38 SUPER. I have a Bar- Sto .38 SUPER barrel that handles 9x23 no problem, I normally chamber ream any USPSA open class pistol I build in
9X23 so that it will handle all of the rimless brass out their (9x23, .38 SC, 9SC, .38TJ) and have so far built 10 barrels this way with no problems ( 8 Compensated & 2 5” bull).
2011BLDR