Oh heck, let's just think it through for a while and see what we can come up with. First I'd make a mold of a 22 long rifle case and make a casting that would serve as a case. I would then modify that casting to accommodate a Remington Etronx electronic primer. About ten of these cases should be enough. I would then modify the gun to detonate this type of primer. I would then have a custom mould and sizer made for 22 LR bullets, probably something odd in size like 43 grains instead of 40. Because of the anticipated volume of shooting, a single cavity mould will be sufficient. I would cast my bullets from wheelweights (for economy, of course). These bullets would then be moly coated. My starting load would be 7 tenths of a grain of bullseye and I'd work up from there.
There! all that's left to do is to take a trip to the range in my homemade automobile and we'll see how it all works.