Thanks guys. Here's the list of mods:
2289 barrel, full shroud
Cooper-T bulk adapter, installed a bleeder valve
Airscource adapter silver soldered in place,
12G eliminator
Crosman steel breech
Valve work: Milled out the valve for max volume, Drilled, tapped, and filled in hole where valve stem enters with brass, re-drilled to accept 2289 valve stem with the derlin seal (much better flow), re-angled transfer port, cut threads, weak spring.
Transfer port mod done with really big holes cut with an end mill and a .17 HMR shell casing (approx. .21" inside dia) for the tube, barrel port opened up to the max and oval shaped.
Took the piercing pin from the old valve stem, and machined it to fit into a tiny hole I drilled into the end of the bolt to form an extended probe.
Drilled out both the end-cap and hammer to accept a larger diameter spring, and used a two stage compression spring for hit strength and duration.
The hard part: trigger linkage....I MIGHT just share this info if you ask nice
. I asked a dozen guys how to do this, and not one would tell me....some kind of "Holy Grail" I guess.
3/8" thick aluminum barstock for the scope mount...I wanted to keep the scope mounted to the breech for max. accuracy
stock, grips...I THINK that's it. It's all pretty much a purple haze.
Ryan
