They stepped into the fray, and one result was the. These could only be overcome if highly specialized and modified AK-47 magazines were used. A major reason for the lack of take-up by shooters came with feeding issues. It has to be said that this did not meet with much success.Īn example, the 7.62x39mm cartridge (as was the 6.8 SPC and Grendel). It was no secret that Colt Firearms, along with other ammo makers, had previously attempted to chamber AR-style rifles for. So what was the response of ammunition manufacturers to a potentially highly lucrative market? This platform is based on the AR-15, which is the most popular civilian rifle out there. 300 Blackout was based on military use with the M4 rifle. 300 Blackout’s superior performance over a cartridge that was previously classed as “Gold Standard.” But What About The AR-15 and. It moves almost 100 fps (feet per second) faster.300 Blackout cartridge is around 40% heavier than a 9mm round fired from the MP5-SD. In addition to this, there were two highly advantageous benefits of the. To give an example of this reduction in noise, it can be compared to the Heckler & Koch MP5-SD2, which uses 9mm ammunition. 300 AAC benefit came from a very significant noise reduction when subsonic loads and a suppressor were used. 300 Blackout cartridge meant that only the barrel of the M4 rifle needed to be changed.Īnother. #Best subsonic rounds full#This allowed the use of the existing M4 magazines to their full capacity. 300 AAC Blackout because the case used was built from the existing 5.56mm cartridge. 30 caliber round that was compatible with the M4 weapon system. However, they were aware that this alone would not justify the complete replacement of the military’s primary M4 battle rifle. Their aim was to increase the terminal performance offered by a. While the 5.56 NATO round was (and still is) a proven and effective cartridge, ammunition developers wanted more. 30 caliber cartridge that performed better than the 5.56mm currently used by U.S. While this work began in 2009, the majority of it was carried out during 2010. We Have Everything You Ever Wanted to Know about Ammo!Īdvanced Armament Corporation (AAC) developed the.1 Federal Premium Full Metal Jacket Boat-Tail.1 Hornady 300 Blackout 125gr HP 50/Box – Best.300 AAC Blackout 150 grain – Best Soft Point Centerfire Rifle Ammo I'm fixing to get the tooling to reload 300blk it but I have many projects ahead. Someone else will chime in on 300blk, I refuse to pay $0.60+ per round as that is what subs run. It's typically 230gr and it's such a heavy bullet that it usually runs 800-900fps without having to buy any special subsonic ammo. 45 is that just about all of it is already subsonic. It run's great in all my pistols and rifles and auto SMG and I source it locally for pretty cheap. I've had great luck with Gemtech 42gr Subsonic ammo. The American Eagle goes for $189.80 per thousand ($0.19 per round) but right now they are running a rebate promo and its $1 off every box so it's $169.80 for a 1000!. AE and Speer Lawman is pretty much the same, but I prefer the AE over Lawman. I shoot 10's of thousands of rounds of this ammo a year and I love it. Typically I use Federal American Eagle 147gr. SGammo is great but I've had much better luck lately with and usually their shipping is free.įiocchi 158gr is the best subsonic ammo hands down!!! It's my favorite 9mm ammo to blast through and burns very clean but it comes in at $2 rounds ($0.285 per round) so I keep that for special occasions. I pretty much only shoot subsonics as everything I own is suppressed and I only shoot outdoors with no hearing pro. #Best subsonic rounds trial#This comes from trial and error once you try some different rounds. When shooting suppressed your going to get a lot more blowback into the gun of power so picking an ammo that burns cleaner can get you a lot further without having to clean as much. The last variable is the 'cleanliness' of the round. All ammo boxes are going to have ratings on the box with stated FPS of the round but with pistol cartridges it's going to state FPS shooting out of a pistol length barrel so if your shooting out of carbine or full length with the pistol round you might be reaching higher velocity's. The longer the barrel the more time it's going to have to speed up and get closer to the sound barrier and louder it will be. You also have to take into account barrel length. The key to finding subsonic ammo is finding ammo that is going to shoot below the sound barrier which is 1125fps.
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