870 barrel confusion?

[Dryrun54]

I have an early model 870 20 gauge wingmaster and I am looking for a mod choke barrel and am not having any luck. I thought I did my research correctly and purchased a 28” vented barrel that as it turns out doesn’t fit because the I.D. of the barrel ring is 7/8” and my magazine O.D. Is 1”. Can anyone help me find a barrel that will fit

Thank you

[USMA-1982]

I think you have a 12 gauge. The magazine tubes of my 12 gauges are all right at 1in, and my 20 gauge mag tube is 0.85in.

[Germansheperd]

You are correct it sounds like you have an early 20ga Wingmaster but you bought a barrel for a later 20ga. You need to find an older barrel that fits your older style 20ga.

[USMA-1982]

I stand corrected. Did a little research and it appears the older 20 gauge mag tubes were the same outside diameter as 12 gauge. Learn something new every day.

[Chilly]

Im not aware of barrels being made for large frame 20 gauge anymore. They are sweet old guns so might be worth having screw-in chokes installed.

I have a super clean large frame 20. Got it for my kids, but instead I think I'll sell it and get them started on 12 ga with 7/8 oz loads I put together for them. Its the only 20 ga I own so rather stick with 12 for everyone.