For me, being a Pa boy, groundhogs are the varmints of choice.
For me, my cartridge of choice would be my 222 Rem in either my Rem 722, Sako L461 Vixen or Rem model 7. As you can see, I love the 222. I've owned and hunted with it since before their was a 223. Not saying that the 222 is better than the 223. Just that it's my favorite.
Ultimate Varmint Gun depends on who you are, where you are and what varmint you hunt.
