Need some help identifying an arigun barrel

[Helder22]

I was going through some old parts and found this barrel. It is in .25. I also found one in .22 with exactly the same 3 notches on the bottom but the strange part is the OD is a little smaller l, which doesn't make much sense to me, as it appears to be for the same model of rifle so I would assume they should have the same OD.
Here's a few pics.

 

[subscriber]

It reminds me if a Marauder barrel. Diameter and lengths might help.

 

[Helder22]

The .25 barrel has an OD of .5 inch and the .22 has an OD of .436
Both are 20 inches long.

 

[subscriber]

Those dimensions confirm that these are Marauder barrels. The shape of the crown on the .25 is also consistent with a Marauder barrel.

The number of lands in the .25 would distinguish a Green Mountain hammer forged barrel from a Crosman made barrel; except I can't remember which is which. Will find that info and post it.

 

[subscriber]

The Green Mountain made .25 Marauder barrel has 10 lands and grooves. Benjamin barrel has 6 lands and grooves in .25.

This thread discusses the switch from GM to Benjamin barrels in .25 Marauders:

No more GM barrels in Mrods? - Airguns & Guns Forum

No more GM barrels in Mrods?, Air guns, Airgun Forum

www.gatewaytoairguns.org

More references from the linked post, as you go back in that thread.

 

[Helder22]

Thank you!