help wanted with identification of pistol barrel.

[Vic Thompson]

as title, it's in 0.22 cal, about 250 mm long, 11mm dia, and about 25mm from one end its got a reduction in dia to 8.75 mm for 6.3 mm of its length, and well blued. Initially I thought that it was off an HW45, but I don't now. It appears to have more than one twist of rifling along its length, so I'm guessing at an 8" pitch. Can anyone out there id it from that crude description above please ? I can supply piccies if required, but can't post them myself.

Thanks, Vic Thompson.

[T 20]

It looks Crosman size to me Vic, but they have a transfer port hole at the breech.

[thisisdonald]

Could it be a Webley nemesis barrel? They have a step about 8mm from the breech and there might be a witness mark near the muzzle where a grub screws touches.