Depending on the range, I would use the Hornet, if closer 22 mag or 17hmr should work great. If you want to use the 223, load 36 gr Varmint Grenades with the youth loads either on IMR of Hodgdons website. They also make a 30 gr V.G. for Hornet but can be used in 223. I'm gonna try them slowed down. Better hurry up and decide, our season ends soon. Good Luck!