Yellow drywall anchors are universal in the rimfire world. But they don't feed very well in semis.
Tipton Snap Caps 22 LR
22lr Plastic Safety Snap Caps/24 Pachmayr 3200
They wear out pretty quickly, though. This is one reason I have the habit of being on mailing lists and stopping in the local Academy when I'm driving by. Snap caps are one of the things that sometimes are discounted massively.
Agree with the Ruger advice. Mine came out surprisingly nice.
I like to use the small-diameter stones. They are dedicated for working on guns, so they don't get worn out doing other stuff. I use baby oil because it's cheap and doesn't hurt anything when it gets on my skin. Dispensed from
a needle tip bottle. I picked up most of the stones from Enco before they were absorbed by MSC Direct, when they would have significant discounts site-wide and free shipping with no minimum.
Midway sells a set that is almost identical to
the one Brownell's sells, for about half the price. It's rare that I buy anything from Brownell's, as they are usually the most expensive place to buy anything they sell.
You can get that set, plus the same thing in a coarser grit that will knock down the big lumps and rough edges a little faster,
from Zoro tools. Good vendor, I use them a lot. They also sell through ebay. They often have hardware that's difficult to find anywhere else, and if you get on their mailing list, they sometimes have substantial site-wide discounts.