[SgtMAjB]

I inherited my Dad's Model 12 serial number 632908. Still shoots great hence my pheasant limit last weekend. I'd like to know the approx age? Also can I shoot anything else but lead?

[TrapperReady]

Bismuth works well in guns which may have issues with steel or other very hard shot.

[Dave McCracken]

Bismuth.....

[10X]

Bismuth should be OK for these fine old guns when needed, waterfowl. Stay with lead when you can, upland game. For heavens sake don't use steel shot, never.

[Audie]

do a search for winchester model 12 serial number, you will find what you are looking for. My number is 952XXX and is 1942. So yours is quite a bit older.

[mothernatureson]

I've got my dad's, close to your serial #, 1931. It's a nice old gun, but would use only bismuth and lead in it. They are sturdy old guns and could probably handle steel, but why strain it?

[Red Label]

armscollectors.com Looked it up. Your gun was made in 1931 and no, don't shoot steel through it. Other lead type stuff is OK.