gunbear
FNG
I have a 6.5 Grendel that works for coyote and deer. .223 should be good for coyote though and more available
Have you given any thought to the new 6 ARC? Get a complete upper and put it on one of your current AR15's easy peasy and it even has factory ammo if you don't reload.
Excellent choice.....
I bought two different Aero Precision 6 ARC uppers from Brownells last year. 1st one shot so so, 2nd one was better. Killed a few coyotes with it, then sold it, and built an upper with a Shilen/Ranier Arms barrel.
This one is a f'ing hammer, 1/2 MOA with 87 Bergers at 3000.
Still waiting to pop it's cherry though.