You really do amazing work on those crosmans. Thank you for sharing your knowledge!
My MO for the stock is to use a break barrel gun stock and modify it.They're only $30 so it's a good starting point.Not sure if I'm going to go with a thumb hole stock or a more conventional look.My TH 2100 and 2 donor stocks:
Here they are mocked up.I do like the Storm XT stock over the TH stock for this gun.
The original crown wasn't very good so cut it back and recrowned it.Cut off the original lead in and turned it down to fit the 2200 breech.Drilled the port .157" and drilled and polished the lead.Ended up at 23 1/2".Bottom pic is of an LW barrel for comparison.Notice how much deeper the rifling is.
Quote from: Tack Driver 10 on January 15, 2018, 05:00:22 PMThe original crown wasn't very good so cut it back and recrowned it.Cut off the original lead in and turned it down to fit the 2200 breech.Drilled the port .157" and drilled and polished the lead.Ended up at 23 1/2".Bottom pic is of an LW barrel for comparison.Notice how much deeper the rifling is.Nice work! I have a model 1 with a 2260 barrel like that that shoots great. I also have a 2200 with a crappy soda straw barrel that is not accurate. It looks like the soda straw rifling fades away before it reaches the crown. I thought of cutting the soda straw shorter to see if that helps.
....I'm not a big fan of pumping 15 times so reducing the valve volume shouldoptimize the gun at 10-12 pumps similar to the middle test results.It'll peak out at around 750 FPS with 12 pumps vs 790 FPS at 15 pumps currently.
Quote from: Tack Driver 10 on January 17, 2018, 03:40:35 PM....I'm not a big fan of pumping 15 times so reducing the valve volume shouldoptimize the gun at 10-12 pumps similar to the middle test results.It'll peak out at around 750 FPS with 12 pumps vs 790 FPS at 15 pumps currently.This thread is awesome. Thank you for sharing your ingenuity!15 ft-lbs at 10 pumps from this platform is pretty amazing. Is it much harder to pump than stock?
Back in the 1980s a friends dad modified a Benji .22 and a 2200 both to ~18 fpe for me... had the best 30-35 yard hunters around... the only reason I took the heavier Benji on my long walkabouts( Sierras/Rubies/Jarbidge wilderness/high desert) was because it looked more like a pellet rifle... The 2200 looked to much like a real rifle...The weakness that shows up about 18-20 fpe is the tray portion of the bolt want to break...It actually seems take very little rifling at 10-20 fpe to get pellets to stabilize... Back then it was the green tin benji...before I turned the pump into a 1325(then 1322) power plant (with .3" extended valve nose)I just made some barrel stabilizers for my 2100b and it was a lazer (sub .4") with the 7.4 points at 30 yards and was almost as good with the 7.9g CPHP...lots of fiddly little leaks and such to fix on the platform... but when done they are surprisingly good air rifles... Back in the day a guy named Jeff Wolgast would put 1760 and 2260 barrels on them and they were said to be very accurate to about 50 yards...I love seeing a well done Model 1/766/2200/2100 Rifle thank you for sharing...