300 AAC Blackout, would you buy it again?

The 300 BLK excels at one thing really; a suppressor host. If that is the goal then yes 300 BLK is the ticket. If hunting is the goal or any supersonic use for that matter; then I would recommend looking at the 300 HAM'R . It has a good selection of bullets if reloading and out performs all of the 6.8 calibers available to the AR-15 builder. If not planning on reloading the 300 HAM'R is still a decent choice in terms of ammo offerings although not particularly cheap.

I would avoid the 350 Legend; it just isn't ready for prime time yet. Bullet selection is problematic at best.

EDIT: If you're looking to go supersonic but the 300 HAM'R just doesn't float your boat then I'd recommend looking at either the 277 WLV or the 6.8 SPC. Even the 7.62x39 for cheaper ammo options.

EDIT2: FYI the 300 HAM'R, 277 WLV only require a barrel change to a MIL spec AR-15. The others will require bolts and magazine changes as well.

rigrat said:

I would go 30 Herret (TAC 30) before the Hamm'r. The 350 is to new for me but as far as bullets all you would have to do is resize 357/38 bullets to the .356 diameter it is.

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Welllllllllllll ..................... sort of. Problem with 350 Legend bullet selection is the lack of rifle bullets for it. You can resize pistol bullets but; they are just not designed for the velocities the Legend is capable of. Also; the SAMMI spec on it is like 355 to 358 (thats a pretty wide spread. Add to that manufacturing tolerances and accuracy is all over the place. I'll wait and see how it settles in; but honestly I don't think it will ever amount to much other than a legal straight wall hunting round in some states.

EDIT: And while I agree the 30 TC is a good round; for the AR I would pick the 300 HAM'R