My daughter is now using it for trap with the 30" full choke. She messes with the guy when she tells them that this model 37 is a repeater and she can slam fire it. They don't believe her, then she will slam fire it.
Bob:
I used a M37 with the 20" deerslayer barrel as my squad weapon and had the mag 10 20" in the trunk, just in case!
but the model 37 came with a 30"ribbed full choke barrel. Ithaca back then didn't have a 18.5" for it, that is how I ended up with the 20"deerslayer.