I have a Valmet 412ST O/U that I've been starting to shoot trap with again. When I bought the gun way back, it came with 3 screw in choke tubes. These tubes have the std 4 knotches in the leading edges for a wrench, are approx 2" Long w about 1" of fine thread banded on the outside.
I'm now thinking it would be nice to get a few more tubes for the old girl and am wondering it there is a standard for choke tube thread/ size or if I need to try to hunt up maker specific tubes frm Valmet?
Any insight welcome and thanks in advance.
