Well, this is where things went following the light weight Disco build in my last post.
This little guy is made from parts from an earlier build.
The shortened Disco tube and L/W .20 barrel were both recycled. Also found a M'rod trigger group and trigger guard hidden away in my shop. What I wanted to do was use a 1701 breech/bolt on a tube with a modified Disco valve, as a good deal of my shooting is with bulk co2 and the P'rod/1701 small valve capacity makes for a pretty under powered co2 shooter. So how to mount the 1701 breech as the two screws that fasten the front of the breech through the tube and into the valve won't work with the larger ID of the Disco valve. For me the answer was to drill the breech for the forward 4/48 breech screw that the 22xx platform uses and also add a heftier front 8/32 cap screw that threads into the tube 180deg opposite the trigger group screw. This was done by drilling a 1/4" hole through the top of the breech and into the barrel bore ending with a .080" deep counter bore in the bottom of the barrel bore to clear the head of the 8/32 cap screw. This gave me a very stable breech mounting, but also required making a brass thimble so the barrel can be mounted after the breech is installed. I imagine this method could be used with a P'rod breech if anyone wanted to move up to a larger Disco valve.
Thanks for posting, read both, that is "High quality work and Innovative thinking combined"!! That Disco shorty .20 cal. is a"KILLER"for sure!!!!! Great authentic work keep it up!!! And thanks again for posting;
..schweet.... great job on the triggers... i like .20 cal the best for what i do - and the accuracy of .20 cal - i mean , sheridans shoot circles around any benjamin i have tried. hands down. jsb 13.7 turns a sheridan into a "scope needed" rifle..... dime-size groups at 40 yards.. it's like the airgun mafia tried to shut down .20 constantly....and look at what crosman calls sheridan now - it's a bb gun..... - paul.