Supper magnum barrel compatibility

[Bourget117]

Looking to add a longer barrel to my marine magnum so I can use it to shoot clays. This is on temporary until I can save up for something better. I came across a inexpensive 26 inch barrel that is for super magnums. Can I use this barrel on my magnum receiver? I’m not looking to shoot super magnum shells.

[Synchronizor]

Yes; shorter shells will shoot fine in a 3.5" chamber, and everything about how the barrel interfaces with the receiver is the same between standard 12ga and SuperMag 870s.