Theres a few simple things you can do to eliminate stovepipes. Trust me, my 10/22 cycles subsonics. The biggest thing is bolt velocity. Hicap mags often rub the bottom of the bolt, slowing it down. The heavy spring pressure makes stripping a round alot harder, slowing it down. First, insert an unloaded mag and cycle the bolt slowly. Feel for resistance as the bolt passes over the feed lips. If you feel resistance then you will have to file the feed lips down until the bolt travels over them without touching. This will help alot. For the spring pressure, load the mags to full capacity and let them sit like that for a couple days. It sets the spring a little. A new extractor will grip shells better and a heavier extractor spring will help the extractor keep its grip on the casing and fling it out harder. It will help. Lastly if you want to make your 10/22 slick as s**t in a frying pan then chamfer the bolt where it contacts the hammer. Add a nice easy radius and polish it. Next, take your hammer spring strut out and polish it. Burrs will create incredible resistance, polishing makes a big difference. Lastly you can cut 1 or 2 coils off your hammer spring. I keep beating the damn hoppes T3 drum but it is by far the best oil Ive used. It makes a noticeable difference in every gun Ive used it in. Do all these mods and your 10/22 will be easier to cycle with the hammer down(fired) than with the hammer cocked. Throw in a nice polished guide rod to replace what looks like a cast iron factory piece too.