Home Forums Hunting & Shooting Ask The Gunwriters 300 Blackout ???

Thanks, the Lehighs sound promising.

Midway just got in 240 Matchkings, and I ordered 2 boxes. I'll give them a whirl, too.

For the OP, a couple of random points:

At least with pointy bullets, in both the .300 AR's I have owned, they functioned reliably and shot better when loaded to mag length 2.24", rather than the AAC-recommended 2.08". Blunt tipped bullets, will likely require different OAL to feed well.

I was interested in pistol-caliber carbines for years, as a HD rifle, but that interest eventually morphed into a Daniel Defense V5 in .300 Blackout. It's a versatile rifle, and handier indoors, than a typical pump shotgun.

No, it's not a .30-30, and maybe not even a 7.62x39, but it does have some decent potential, with some good advantages.

Wilson Combat does sell AR uppers for a proprietary wildcat called the 7.62x40, which is basically a .300 Blackout stretched to mag length. They are usually designed purely for supersonic loads, and are very close to 7.62x39.

edit to add - Midway has 220gr Sierra Matchkings in stock, right now.

It's 30 carbine territory and dependent on bullet technology, but makes most of its velocity in a 10 inch barrel, and this is where it makes the most sense.

Just wondering how fast can you push a 30 carbine 110 grain bullet? Im running 110 barnes tac-tx 2375 fps in my 16" 300 blackout. Played around with some subs, but decided to just use supers. Its to much fun busting water jugs at 250 yards with her. Rock river upper/lower/ two stage varmint trigger, wilson combat recon 1/7 barrel. Yhm suppressor. H3 heavy buffer and extra power spring. Recoil is just so soft!