Quote:
Originally Posted by UNKNOWN_370
 .300 blackout fits in AR mags and drums. lol  |
Premium ammo costs similar, training ammo drastically favors 5.56, performance on-target difference between a similarly placed projectile doesn't differ much when both are loaded with good ammunition. Unless you are working around vehicles a lot (greater mass does do better on body panels, etc. in some cases), 300AAC doesn't make sense to me.