When To Choose A .308 Over 5.56?

[bzdog]

I would say that is a major oversimplification. With the exception of two limited production Barnes bullets a 300 Blackout with a 9-12 inch barrel will be at or near the minimum expansion velocity at the muzzle for every .308 bullet currently in production.

I'm not sure saying 300 BLK doesn't perform optimally with bullets not designed for it should be considered an issue.

For defense inside of 100 yards 300 BLK with the 110gr Barnes black tip is going to be hard to beat, even out of a very SBR. Make that 200 yards for a 16". With these combinations, the bullet is traveling fast enough for a rifle wound profile and you get reliable expansion and s barrier blind full copper bullet. I'd call this combo for this application cake and eating it too.

After that it gets a bit more gray as the 300 BLK slows down and drops faster. That said, the Barnes black tip reliably expands to 1300 FPS which ends up around 400 yards out of a 16".

And as for availability, the Barnes black tip has been pretty much the only premium ammo that was available through the BLK ammo shortage.

-john