I just put together a 6mm ARC, Howa Mini, Athlon 2-12x40ish. I've worked up a load for 75gr Speer HP's. Tomorrow I'll do the final sight in and take it out to 300 yards
I find the little ARC to be a great round actually a better for a bolt-action than an AR. With the appropriate action, Howa Mini, CZ 527, Mini Mauser you can build an amazing little carry rifle. Right now the Howa Mini is the least expensive and easiest to find so I'm building on them. I have a 6.5 Grendel and a 6mm ARC, waiting for the 22 ARC to be chamber in it. I
My thought is if your going to use a standard short action you might as well go with a standard case and throttle it back if you like mild. Plus you can go full bore and leave the ARC in the dust.
I'm going to start the season with my trusty 222 Rem 788 1.5-4x24, 6mm ARC Mini Howa 2-12x40ish and my combo gun 16ga/16ga/6.5x58R 1-4x20mm.
No matter what action it is in it will kill predators just fine.
Good hunting
Imagine a Mini Mauser in 6mm ARC, MPI synthetic mannlicher stock and Leupold VX-3 1.5-5x20mm scope. What a classy little calling rifle that could take a beating much like a Sako Vixen full stock but tuffer.