Get a proofreader and an editor.
I Reload tons of .300 blk. This is a round that mostly only makes sense for reloaders. Can’t imagine paying ridiculous retail prices for .300 blk, especially for rounds that can’t touch my own in terms of performance.
Sounds kinda neat, but the one thing ( remember the “one thing”?) is htat the article discusses super and sub-sonic loadings as if they are interchangeable. Yeah, they really aren’t.
The sub-sonic semi auto AR15 300AAC/Blackout is made to opeate with mild pistol charges of fast burning powder- a smaller gas port located at a few inches forwardof the chamber- a pistol AR set up, regardless of barrel length. Then you add the supper sonic loadings, set up as either carbine port and system length or longer. A sub sonic 300 is a singular item, a super sonic set up is another, okay, so two uppers, great.
The super sonic upper won’t function/cycle with the sub sonic ammo, and the sub sonic set up will be beaten to death with the super sonic ammo. Just slight issues in my book.
Secondly, while the sub sonic set is great sounding (a pistol round if you like- a 200 grn 30 cal bullet at 1050 is a pistol round). And is great for stuff at pistol ranges. Standard heavy 30 cal BTHPs won’t expand at sub-1000 ft/sec impact velocities, and usually won’t expand at heavy rifle velocities as well- they are not made to. So, Hornady and maybe others make a 300ACC/BO heavy bullet designed to expand. Next up s the anemic performance of the 125-150 grain loadings for the super sonic version. Out of a carbine length barrel of 16 inches, it runs about 2200 f/s at the muzzle, slower than the oft ridiculed 7.62x39 soviet round.
(Throw up your hands now gesture) What to do? Take both your 300 AAC/BO uppers and enjoy them immensely ( espc the heavy set up with a suppressor!), second, enjoy your super sonic 300 AAC/BO as well. But do not expect them to meet your “one gun/all needs” requirement.
Wish the folks writing these articles would be fair enough to explain the facts, not just the “neato” stuff.
Subsonic loads are crap because there are no .30-cal bullets designed to perform at such low speeds.