I have 2 ARs right now and I do have a tendency to go bolt action or single shot ( Sharps,Browning,Ruger no1) but in this case a bolt action peeks my interest plus I'd like something unconventional that I could have fun with without breaking the bank and my shoulder. Ammo shouldn't be that tough to find and if worse comes to worse I got tons of 7.62x39 brass I could reform to 6.5 grendel
Seriously, SBR a 6.5 Grendel bolt gun
As for ammo, bonus that you can get (before corona panic) cheap steel rounds for practice.