300 Blackout

Shotgun Jeremy

Spelling Bee Champeon
Lifetime Member
Jul 8, 2012
11,221
113
Central Texas
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?
 

gdouthit

Active Member
Jan 16, 2013
719
18
BCS
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

Uncoiled
Lifetime Member
Oct 15, 2009
34,264
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Lampasas, Texas
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.
 

Dawico

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Oct 15, 2009
34,264
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Lampasas, Texas
Top picture is a 300 WM and a 300 Blackout case. Bottom picture is a 300 WM, 300 Blackout, 30.06, and a .223 case.

 

1slow01Z71

Well-Known
Jun 24, 2012
2,405
36
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

TGT Addict
Jul 24, 2011
4,431
48
Conroe, TX
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

Well-Known
Jun 24, 2012
2,405
36
Kyle
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

TGT Addict
Jul 24, 2011
4,431
48
Conroe, TX
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

Well-Known
Jun 24, 2012
2,405
36
Kyle
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.
 
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