Posted 10 February 2006 - 02:07 AM
I very much doubt that you have the ability to make an air rifle (I know I don't have the skill, and I'm willing to stake a claim that even Boltsniper wouldn't make one). Let alone a semi-auto one. Getting barrels for those things isn't as easy as getting pvc at the local hardware store.
But to try to answer your question, the semi-auto air guns I've seen had revolver-style loading. I'd imagine that a advancing clip (think sawtooth) would work also. You would need to do something like on the maverick, with angled slides to advance the revolver, or a geared mechanisim in order to get it to allign. Using your "design," you would need a bolt, possibly with some kind of blow-back.
But again, it is not going to be anywhere near as easy as anything in nerf. You can't miss the allignment by anything (and by anything I mean .00#'s of an inch), or else it will not work and possibly will be dangerous. I would not recomend anything like this unless you are a gunsmith, and if you are I doubt your skill because a gunsmith wouldn't be asking these questions.