Crosman 2289 backpacker 2
My 2nd made from mostly aftermarket parts. I started with a disco steel breech on the 1/4″ riser kit for a 13xx based airguns. I figured not having the breech screw in the path of the cycling pellet was a great idea. Been chasing the elusive 13xx notched, flutted hammer to be used with the 1701/prod trigger group. I tried alchemy airwerks since that’s where I buy most my crosman 2240/13xx parts.
They make 2 neither support the disco rear breech screw breech.
So this project scrapped. I did manage one shot over the chrony 10pumps 13g pellet 258fps. And it still had a partial charge left in the valve. While tearing the gun down the hammer was dragging on the top of the sear.
Changed out the disco breech to the old forward breech screw breech. The barrel is one of the AOA fx LW barrels they were selling for 20 bucks I picked up 2. Since the hammer was dragging on the prod grip I swapped my deck gun bluefork trigger group. Ok no sear dragging with this setup. Using a airgunsmith brass valve and piston. Great valve if you can find one.
Better look and better numbers lol.
The numbers on the chrony (505) reflect 15 pumps and a JSB 18.1 pellet. 10pumps JSB 18.1/ 446/ 443/443fps. H&N FTT 14.66
437/430/433. The H&N excites 13g clocked 562fps 15 pumps, 10 pumps492/485 fps.
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So been working on my excercise machine. Pulled the 14″ barrel swapped in a 20″ crosman 2260 barrel unchoked. Shoots pretty accurate. 510+ fps 10 pumps with h&n 14.66 ftt. Got it pumped ready and waiting on mr bushytail to show. The regular spot for them is 19 yards.