Thread: Grey Birch 10/22 barrel

Originally Posted by HandH

...thread protector was too tight to get off without risking damage...

As I told @HandH via PM, I'd forgotten that the thread protector was an issue on my barrel as well. I took mine off with vise grips (carefully!) and scraps of leather to avoid scarring it up. Going off memory here, but I think it was pretty clear that the OD was turned while it was installed on the barrel and perhaps the cutting forces over-tightened it.

Originally Posted by HandH

...decided that it didn't make sense to use expensive ammo and range time for something that looked so unpromising...

Which shows that your judgement was better than mine

Originally Posted by HandH

- Very shallow rifling with transverse and longitudinal tooling marks. Hard to describe, just looked really unusual.

I found the additional photo below - not very clear, but does it resemble what you saw? This was after I cut a new flat crown for testing. I remember some transverse marking at the muzzle end, perhaps slight chatter of the rifling button (?) during manufacture.