Spike -
Howdy !
I DK what ranges you might be shooting groundhog & coyote etc in MI ?
For NE Indiana groundhogs, I first tried factory and custom .22-250s, but felt a little under served on deliverable enegry, when shooting 55gr varmint bullets from a 24" 1-14; w/ practical range limit of 500yd.
For me, the answer was my wildcat .22-35 Remington, which gave me my minimum desired 450ft lb of deliverable energy out to further distances. The .22-35 is pretty much a " .22 Creedmoor ", as regards case capacity; but designed 3 decades earlier. Cases of this capacity range can give good barrel life, provided you use sensible load choices, control rapid fire rates; and use good cleaning practices. They can also get a lot done, when fired from a 24-26" barrel.
These days, your cartridge choice might be influenced by primer availability. SR primers seem to become
un-obtainium before LR primers do. That might persuade one away from cases that only come set-up for SR primers.
If you don't' slave yourself to an AR platform / magazines, and also are not averse to shooting a single shot bolt gun; things become pretty much catre' blance.
I myself don't think one would have to go much heavier than 73-75gr in .224" cal for a Midwest varmint rifle.
The breezes are not quite like the winds encountered further West in the U.S. In cases capacities like the .22-35Remington, .22-250AI, and .22 Creedmoor..... these bullet weights in a long 1-8 or 1.75 barrel can give you a 1,000yd capability.
With regards,
357Mag