Count me out of the slide fire. If I was gonna waste tons of money on ammo I would get one of those crank style trigger things with bunches of extended mags. Saw a guy at the range who had a 10/22 all done up like that. Gotta admit, it looked fun.
http://www.cabelas.com/product/Shoot...3Bcat104815080
Heck of a lot cheaper and comes right off.