Here's the clip loading system:
I make no claims to the originality of the system: it's pretty much Renegade's R-Clip system, with a few subtle changes. Mainly, I ground down a washer, and seated it in the joint of a OVC coupler, and then added a rubber washer above that.
The benefit of this is that when the bolt is pulled back, the end of the brass is biting into rubber, making an airtight seal - no air loss, period. The airflow reduction has also caused a serious increase in the velocity of air coming from the plunger - I have yet to actually test, but darts seem to be hitting hard
This is the bolt:
The barrel itself is 17/32" brass. I only used 9/16" brass down by the breech, and another ring of it higher up to keep things centered. I used an endcap at the end of it all to keep the bolt in place. As luck would have it, using a tube cutter on brass curves in the end, making a great fit. The barrel itself starts a quarter inch from the end of the bolt.
This is because I was having problems with the dart end getting caught under the barrel, causing a misfire. Since the 9/16" is considerably wider than my stefans, it solves that problem.
Here's the clip:
It's a cassette case that I cut down to the width of my darts, and then hinged. Yes, the hinge I used is stinkin' huge, but it was the only one I had around late last night. I kept the original tape hinge on it, because it acts as a door catch, keeps it from swinging all the way open.
Loads with gravity feed:
The brown is a chunk of dowel to give the stack just a bit of weight. I can load up 7 darts, six of which can fire. This is a good thing: that last dart keeps the dowel from chambering, so I don't accidentally fire somthing a bit more painful than foam.
There's still a lot I'd like to do: a spring return on the bolt would make life easier, so I don't have to pull back against it. I need a couple of parts to finish the stock. Testing to determine my optimal barrel length would be good. Some reinforcement by the clip is necessary, it's just hotglued on. I'll need to become more proficient in my dartmaking; this gun really shows when a dart is off balance. Oh, and sights - it's accurate enough that they'd be a lot of fun. If the washer gave me as much additional range as I think it did, this could be a damn fine sharpshooter gun. As it is now, I enjoy plinking at the little target that came with my Nite Finder.
Edited by Carbon, 29 April 2007 - 08:52 PM.