Re: Most accurate, heavy bbl. DPMS .308 or Rem 30 AR?
Regardless of accuracy, why would you want to go with a bastardized caliber like the .30 Remington AR which has, thus far, developed little to no support from ammo mfgs and the aftermarket in general? Why not consider a .300 Blackout if you want .30 cal projectiles in a smaller, AR-15 package? Its a no-brainer!
Now, with that said, depending on what your intentions are for the rifle, the .308 will give you outstanding accuracy across the board from the heavy-barreled DPMS, from a wider range of projectile weights and at vastly longer ranges than the .30 RAR could ever dream of.