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  • Shotgun Jeremy

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    For a while now, I've been hearing more and more praise of 300 Blackout. Can someone fill me in on this round? I know zero about it. I'm guessing its between a .223 and .30 cal round, but that's about all I can figure out. What's the difference between a 300 winmag (another round I don't know much about) and 300 blackout?
    ARJ Defense ad
     

    gdouthit

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    It is a 223 case cut off at the sholder then necked down to a 30 cal bullet. Overall length is the same as the 223/556, so it will function in a standard ar/m4 with only needing a barrel change. Max effective range is around 300 yards. I read somewhere (can't find it) that it has almost twice the energy than the 223/556 at 100 yards, and is much easier to suppress.

    just stuff I have been looking at. Im thinking about build a pistol in 300 blk

    300 win mag is a whole nother animal that I do not know much about.
     

    Dawico

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    300 BLK and 300 WM are opposite ends of the spectrum.

    The 300 WM is a huge case filled with a pound of powder and designed for long range shooting/ hunting. It is a popular 1000 yard target round.

    The 300 Blackout round is designed for suppressed firing in standard AR 15 rifles and fits in their mags. Take a .223 case, cut it in half, add a pinch of powder, and jam a .30 caliber bullet on top. I believe the maximum hunting range would be about 200 yards or so.

    They both can use the exact same bullet but that is about all they have in common.
     

    gdouthit

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    ezu3ugus.jpg
    case forming
    7e4uduga.jpg
    case comparison
     

    1slow01Z71

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    Kyle
    300blk 223 308 300wm
    20131106_230513_zpsf5d03f76.jpg

    110vmax 125SST 208amax 45acp
    20131029_215917_zps3198e883.jpg

    208amax and 300blk
    20131029_220822_zpsb7f95ff5.jpg


    Im a huge fan of 300blk. Its by far my favorite gun. It can do pretty much everything I want well. With that said if youre not a reloader and arent going to suppress it I dont see much poi t in it. Reloading is very important for this round and ammo is hard to come by and shelf ammo out of the 3 300blks I've loaded for was not very accurate at all. With proper habdloads 1moa is pretty dang easy to attain. Its a blast suppressed for sure
    20131107_172932_zps1452e7d5.jpg


    If you want to try before you buy youre more than welcome to shoot mine some time.
     

    shooterfpga

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    Ive been trying to get my hands on a 300blk for a good while. Everytime i see a good deal its easily out of stock before i can finish. The 300blk in private market i see are always outfitted way above what i need or want. Its pretty unfortunate because i have a huge resource of 300blk ammo available to me .

    Sent from my SGH-T999 using Tapatalk
     

    1slow01Z71

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    Ive been trying to get my hands on a 300blk for a good while. Everytime i see a good deal its easily out of stock before i can finish. The 300blk in private market i see are always outfitted way above what i need or want. Its pretty unfortunate because i have a huge resource of 300blk ammo available to me .

    Sent from my SGH-T999 using Tapatalk
    Are you looking for just the barrel, upper or entire gun? If youre diligent you can piece one together fairly easily. Rainier has quite a few 300blk barrels in stock
    https://www.rainierarms.com/?page=s..._barrels_300aacblackout&keyword=&pagenumber=1
    I run a noveske and admittedly its probably a bit overkill for this cartridge but the accuracy has been awesome so...
     

    shooterfpga

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    I was originally looking for just the barrel to keep costs down. Also, ive read that a pistol length gas system is better. The ammo in stock around here are in the 115gr and 100gr area made by umc, barnes and whoever makes the hog hammer i believe also has rounds. Problem that i see is im not even sure if these available rounds are subsonic or supersonic as therein lies the initial issue. And now trying to do a search shows umc has recently been pulled off the shelves for a redesign.

    Sent from my SGH-T999 using Tapatalk
     

    1slow01Z71

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    UMC doesn't come in 110gr and the 115gr should be off the market by now as it hasn't been made in months. Remington is only making 220gr subsonics in the UMC line right now. In the spring supposedly 120gr supersonic load under the UMC line will be available. Remington makes the hog hammer line with a special 130gr barnes bullet. It is NOT the same 130gr tsx bullet that makes for reloaders. Pistol length gas systems are best as they aren't as gas sensitive and will cycle a wider range of loads.
     

    shooterfpga

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    Id only be using supersonics and the rounds available at the store only come in 110gr up to 125gr that 110gr i believe was the barnes vortx box. And the 125gr is pnw arms. If i stay within that range am i going to have an issue with carbine length?

    Sent from my SGH-T999 using Tapatalk
     

    1slow01Z71

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    If youre not going to shoot subs then carbine is perfectly fine. Pistol gas really helps subsonic performance. Yes the barnes 110gr is good stuff. The 125gr noslers in the PNW loads are good for plinking but the barnes 110gr and the hornady 125gr SSTs are better for game shooting. The 125 SSTs aren't available in loaded ammo yet. Nosler is coming out with a 110gr varmageddon load that will be fun for those who don't reload. Unfortunately hornady isn't producing the 110 vmax at this time which was one of the most bullets in this cartridge.
     

    gdouthit

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    i did not know that about the gas system. il keep that in mind. I was going to do a shorter barrel anyway.
     

    shooterfpga

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    i did not know that about the gas system. il keep that in mind. I was going to do a shorter barrel anyway.

    Yeah its confusing! Like the noveske one i saw was a pistol gas system but had a warning saying that it wasnt made to shoot subsonics without a suppressor.

    Sent from my SGH-T999 using Tapatalk
     

    shooterfpga

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    I was told you coined run subs unsuppressed with this flash hider
    http://www.midwayusa.com/product/24...kx3-pig-5-8-24-thread-ar-10-lr-308-parkerized

    Same here. But my buddy has one of those on several of his ars.... Lemme just tell you i definately dont wanna run one on mine. That thing is huge and loud. Some of his builds the flash hider is hidden most of the way similar to suppressor builds that are mostly under the rail.

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    gdouthit

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    Same here. But my buddy has one of those on several of his ars.... Lemme just tell you i definately dont wanna run one on mine. That thing is huge and loud. Some of his builds the flash hider is hidden most of the way similar to suppressor builds that are mostly under the rail.

    Sent from my SGH-T999 using Tapatalk

    I like loud ;)
     

    1slow01Z71

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    You can make a pistol gas barrel run subs without a can, I run a standard carbine buffer and it will run subs wothout the can on my 16" pistol gas noveske. I dont really see thepoint Iin doing that but it does work.
     

    TXARGUY

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    I was told you could run subs unsuppressed with this flash hider
    http://www.midwayusa.com/product/24...kx3-pig-5-8-24-thread-ar-10-lr-308-parkerized

    I have KX3s on several of my SBRs and love the Hell out of them. I call them flame throwers with a bullet. Loud for the shooter? No, because it throws everything toward the target (so why shoot subs through it as your sound is going to get there before your bullet does). Loud for bystanders and target area? Yes, sounds like Armageddon. With a huge flame. And a bullet.

    I never understood the point of shooting .300 BLK subs un-suppressed. Is it a case of ammo availability in your area? Both subs and supers are pretty easy to find around where I live.

    Agree with the poster above though. I haven't found anything off the shelf that is accurate enough. Hand loads are where it's at with this round.
     

    Lmccrock

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    I never understood the point of shooting .300 BLK subs un-suppressed. Is it a case of ammo availability in your area? Both subs and supers are pretty easy to find around where I live.
    Fun. And ammo has not always been so available.

    To answer the OP's question..the difference between Winmag and Blackout is about 1800fps with 220gr bullets.
     
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