The goal of this project was to build a reloading system that was both fast and sturdy. After seeing Rork's teaser thread, I got to work.
The bolt is made from a 14" CPVC barrel with a 1" section of sch 40 1/2" PVC hammered on to the end. I used cut down 3/4" fittings (endcap and plug). The endcap lets 1/2" PVC through and the plug lets CPVC. The Barrel goes through the endcap and the plug, with the PVC anchoring at the back due to the plug having a smaller lip. I used E-tape on the exposed end and put a sheath of sch 20 1/2" PVC. I then reinforced it all with epoxy putty.
The front bushing is a 1"x1/2" reducing bushing with the inside sanded so that the 1/2" PVC moves freely. The rear receiver is half of a 3/4" coupler with E-tape and teflon tape wrapped around it. The SNAP itself is a SNAPbow, in the fact that it uses a +bow spring and a similar plunger head.
The spring is there because it wasn't cocking securely before.
Comparison with a BBB.
Ranges haven't been taken, seeing as its dark outside, but is shoots incredibly fast and hard. (I made a point of increasing the resting spring compression)
Anyway, don't mind me, enjoy.