When I was a kid, I used my Dad's 10/22 a fair amount. Ran thousands of cheap rounds through it without a hiccup.
A couple of years ago I asked myself the "What 22 would you buy?" for my girls. After looking at a number of options, I went with a stainless Ruger 10/22 Takedown (the one that you can take the barrel off very quickly and comes with a nice custom pack).
I picked up a number of the BX-25 mags before the ban in Colorado went into effect even before I bought the rifle so they would be grandfathered.
Seemed like a really nice gun. The "take down" mechanism appeared solid and well done.
Finally got some .22 ammo for it by showing up at my local Wal-Mart at 5:30am a number of mornings and took the girls out to shoot.
**** thing jambed about every 3rd round. Stove pipes, misfeeds, you name it. Jambed more times in the first magazine than 20 or 30 years of shooting the older one. I actually can't remember the older one EVER jambing.
I took the entire thing apart, looked it over and compared it to the old one. Lots of casting flash in the receiver, metal shavings and rub marks where the bolt slides back and forth. Cleaned all that crap out and worked the bolt back and forth on the long pin it rides on until if felt a lot smoother.
Took it back out and now it only jambs 3 or 4 rounds per hundred. Unacceptable by any standard, but at least I my girls could get some practice.
Comparing it to the older model, the internals looked quite a bit different. The old one from the late 70's early 80's was carefully machined everywhere inside the receiver. The new one had machining only where things are supposed to contact and the rest of it looks like a rough casting. That which was machined, was not machined to proper tolerances.
I have several older Ruger firearms and they all have performed very well. This new one....not so much. This model was one of the most expensive 10/22s Ruger has ever offered. Pretty disappointing.
Looking around the net, you hear "yeah, you gotta run a couple thousand rounds through it before it starts jambing less to break it in".
Ridiculous.