I know this section is for hunting with cast but I wanted to share this anyway.
I've been swaging 55gr .224" jacketed bullets using 22LR shells and loading them with a medium load in 223rem. In early June we had some relatives from the Seattle area come out to visit and the guy (I think he's my great uncle... not sure, anyways) had always wanted to shoot prairie dogs. He has a Remington ADL 223 he's used for squirrels here and there but never much volume. He brought his rifle along and I supplied him, my dad, and my uncle all with enough 223 loaded with the rimfire jacketed bullets to bring down Armageddon on a P-dog town. I'm not sure of the specifics on every shot but here are some examples of what the bullets will do.
This one was shot by my Dad. He said it was just inside 100yds on all fours facing him.
I snagged this one in the head from about 140yds.
These were all shot with the 55gr .224" bullets made from 22Lr shells and stick on wheel weight lead, my load was an easy 25.0gr of IMR 4064 for just over 3100fps. Obviously shots within 100yds are brutal but I was surprised by the 200yd+ shots, not only that we hit many that far but when we did they were still torn up quite a bit. I used to use Hornady bulk SP and HP 55gr .224" and especially the SP's didn't want to expand much past 150yds, you'd see the impact and watch the dog tumble then scamper back to the hole, none of that with these bullets.
I never really came across any info like this when I was starting to swage so I didn't really know what to expect, I've been doing it for just over five years now and I have to say the kit was worth every penny.