Kind of a gunsmithing question, but I've got a mossy 500 12 guage, It was the two barrel set, 18 1/2" cylinder bore and 26 or 28" mod barrel. I like the handiness of the 18 1/2" but cylinder bore is kind of worthless IMO. Could a guy thread the barrel to fit remington style chokes? I have an 870 with a full line of chokes. My father-in-law is a machinist, and my old man is pretty handy with a lathe, so if anyone has any info or suggestions, that'd be awesome. thanks in advance.