Yep, you read it right. I got a little creatively motivated today. I was rummaging around the shop and ran across some stuff that sparked the inner tinkerer.Lets see if we can make a list:A vintage 180 stock.A 2260 tube and trigger group.A disco valve and fill assembly.A Crossman 24" .177 barrel chopped and crowned to 17".A 2240 hammer and spring.A Challenger power adjuster.A Crosman long steel breech and bolt with a custom delrin knob.A sweet little LDC made from a C02 cart that is surprisingly effective. (I think from Big Bore Bart.... can't remember.)Topped it off with and Uptima scope that was conveniently laying there.Tossed it all in a bag, shook it up and this fell out.
Quote from: avator on January 02, 2019, 03:42:03 PMYep, you read it right. I got a little creatively motivated today. I was rummaging around the shop and ran across some stuff that sparked the inner tinkerer.Lets see if we can make a list:A vintage 180 stock.A 2260 tube and trigger group.A disco valve and fill assembly.A Crossman 24" .177 barrel chopped and crowned to 17".A 2240 hammer and spring.A Challenger power adjuster.A Crosman long steel breech and bolt with a custom delrin knob.A sweet little LDC made from a C02 cart that is surprisingly effective. (I think from Big Bore Bart.... can't remember.)Topped it off with and Uptima scope that was conveniently laying there.Tossed it all in a bag, shook it up and this fell out.Nicely done!One word of caution for those who would like to do this...The Crosman 2260 air tube has recently been changed by Crosman.The new tubes are marked: "2260MB". These ARE NOT THE same as the old 2260 tubes. They are 0.049 wall and machine very differently than the old "2260" tubes (0.065 wall). The 2260MB tubes also have a hard step at the front threaded end that will make it very difficult to get it to seal with a Discovery fill adapter. The 2260 tubes are chamfered for a smooth squeeze on the adapter o-rings.I have hydro'd a couple of the newer 2260MB tubes, and they failed at ~4100-4600 psi. In each case, the fill adapter blew out the front.I have assembled about 50 PCP pistols and carbines over the course of 5-6 years, using the 2260 tubes and no failures reported. I wouldn't use a 2260MB tube except for a Co2 cartridge gun.Pictures of the two tubes below:2260 Tube:2260MB Tube:Edited to add: If I recall correctly, the 2260 tubes were roll stamped on the right side, the 2260MB tubes are stamped on the left side.