Machining a .20 Air Rifle barrel

Machining a .20 Air Rifle barrel

I had a spare Weihrauch .20 barrel in the shop intended for my Wildcat. But after some serious pain staking, head banging hours of tuning and testing the Wildcat I got it shooting like a dream. NOT TO TOUCH ANY MORE!!

So I thought the AA S510 already has both .177 & .22 so why not machine up a .20 also. Enjoy