In case anyone was wondering how it all worked out...

I decided on the CCI lead free, 21 grain for my lead-free rimfire. It is the only option that proved readily available. I use Barnes for all of my centerfire hunting.

It shoots consistently high in everything I have run it through, but groups are acceptable at 50 yards. I hear groups open up considerably at 100, but that is outside my requirement for a hunting rimfire.

Yesterday, I wanted to see how my Win 52 liked it because I wanted to take it squirrel hunting. It shoots about 8 inches higher than most of what it gets fed. That is too much of a difference for me. I am going to leave my 10/22 zeroed as dedicated lead free (it shoots about 4 in higher than lead in the Ruger).

If anyone cares, it ran across the chrono with an average speed of 1986 fps (24" barrel).