I can across a 00 grade in fairly good condition (S/N 330412). A bit unusual as it has 2 sets of barrels. A 30" set with apparent Full bore. The second set is 26" and has a fairly open chokes which I haven't measured as yet. Both sets appear original and not modified.

Both barrels have S/N matching the action body and forearm. The 26" set has a leading R slightly before the S/N.

I understand that factory matched sets would be stamped 1 and 2. These barrels are not so stamped.

I've collected Remington SxSs for many years and this will be a new adventure and challenge.