Here are some pics of that stainless 2260 cart pistol…

…I’ve been workin on.

She is shooting straight and hard. In the last tear down I had to go with a stock Crosman stem guide as the modified guide from Roy at mountain air had an old O ring in it which finally failed…and I did not have any replacements. For some reason the size of the stemguide I have from one of his guns (I have no idea when it was made…) is smaller (see photos below). Many of you know this stem guide mod (the cutting down of the threads for better flow, etc.) and what I have discovered is a difference of 20 to 25 fps between the stock guide and the modified guide. I was able to get the larger o ring into the modified (smaller) guide, but I did not want to chance putting it back together only to find it leaking… With this modified guide I achieved a high FPS of 613 with a 14″ barrel.

I also ran into the problem of some of the carts being too snug in the tube and like an idiot I pushed harder (MONGO) and was not able to get the empty cart out of the pistol so I had to take it apart once more. When I took it apart I decided to try out a “Flow Through” bolt that I bought and when I put it back together I was loosing 100 fps due to the O ring on the probe being too small for my breech…SOOOOOOOOOOOOOOO I had to tear it down once again (I am curious as to the fps gain that can be had from a flow through bolt, anyone know???):x

She is shooting 1/2″ groups @ 20 yards with jsb exact 16.1 gr

The tube and other stainless parts are from Don Cothran. The barrel is from Alejandro, AC custom. TKO trigger kit. The grips are from Rick (They are unreal, truly amazing work!!!) the valve is a stock Crosman with angled flow mod and a Countersunk TP (thankfully instructed by Walt…and man I have to tell you this mod is a MUST! I really saw some serious fps gains (nearly 40) when I countersunk the poly tubing into the valve and into Alejandros barrel!) Stock valve spring and hammer spring (I tried a heavier hammer spring but it did nothing more than make the cocking go from smooth to ruff… I suppose such a spring would benefit a PCP gun…not Co2, correct me if I’m wrong). The rest of the stainless and polished parts were picked up from various gents on the Yellow.

Here she is:

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Next up is my pcp LW 2550 carbine. It should be done in a week or two (time permitting…)[/img]