jason41987
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- Apr 10, 2012
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there are a number of different cartridges based on the .223 case you could consider that use the same mags, same bolt.. some are 6mm, some 6.5mm as well that are essentially necked-up .223s
Anyone Want to School a Newb on 300Blk?
- Thread starter Tophernj
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True...the idea isn't new at all. The success of this has brought it way into the forefront though. You can even buy .300 blackout ammo at places like academy now. I bet Walmart will have it within the next few years. You can buy subsonic ammo in some stores...right off the shelf. Load data is everywhere you look. There's milsurp pulled bullets around if you can find them. You can get barrels from tons of different companies. It's just easy and that makes fence sitters like me want to take the plunge.
AR cartridges are showing more popularity. 300 BO and 6.8 SPC has already shown up on Walmart's shelves. Both plus 6.5 Grendel are regulars at Academy.
C-grunt
Member
I've seen 300BLK at Walmart. I've been thinking of building a 16 inch rifle for light/woods hunting. I probably wouldn't use it on Muleys here in Az as the shots are usually a bit to long for my tastes with this cartridge. I do believe it would make a great round for my uncle's ranch in Ok.
I am shooting a carbine gas system 16" 1 in 8 barrel and it shoots 110 to 155 Gr bullets well. (I haven't tried anything heavier) That gives you fast light bullets that open up easily to a reasonably heavy bullet that will hold together for a variety of uses, and as oldpapps posted, the pulled or new 147 Gr FMJs are just plain fun for plinking.
Other than barrel choice, everything else is just what cosmetic options you like. And there are a ton of them.
Other than barrel choice, everything else is just what cosmetic options you like. And there are a ton of them.
Sounds like you have the same thing I have. I am a Mn boy no suppressors allowed here either. So I opted for a 1-10 twist 16" barrel. I run 125 SSTs right at or a shade over 2200 FPS and I use this rifle for deer out to 250ish. I wanted to get a fast handling autoloader for deer at moderate range that (I know I gonna catch heat for this) didn't look like a Mosin Nagant that got ran over by a tiger tank 
As far as it not being good for 150 - 200 yards per some previous posts. I better go tell the deer I have at the processor that cus he should be frolicking in the woods with nothing but a dent on his hide if that's true.
Here are the results on this years game. Now a pig is not a deer but from what I have seen with my loads I wouldn't feel under gunned at all out to 200 yards on a pig up to 200 lbs.
About a 130lb field dressed doe. Took this one at 80 yards Bushnell yardage pro confirmed. It was walking and I hit a bit back but still got both lungs.
Exit hole was pretty interesting. I could fit 2 fingers in it.
140 yards to this buck my girls first deer hunt and first deer. Second time shooting a rifle. She is kind of a natural. You can see how far away the shot was as my stand is next to her head in this picture
Internal damage of the buck. The shot was slight quartering to her and she hit high on the shoulder it went through and out taking out ribs both in and out. There was about a 1/2" piece of rib laying on the ground where he was shot and a bunch of splattered blood. The lungs where almost in half.
As far as it not being good for 150 - 200 yards per some previous posts. I better go tell the deer I have at the processor that cus he should be frolicking in the woods with nothing but a dent on his hide if that's true.
Here are the results on this years game. Now a pig is not a deer but from what I have seen with my loads I wouldn't feel under gunned at all out to 200 yards on a pig up to 200 lbs.
About a 130lb field dressed doe. Took this one at 80 yards Bushnell yardage pro confirmed. It was walking and I hit a bit back but still got both lungs.
Exit hole was pretty interesting. I could fit 2 fingers in it.
140 yards to this buck my girls first deer hunt and first deer. Second time shooting a rifle. She is kind of a natural. You can see how far away the shot was as my stand is next to her head in this picture
Internal damage of the buck. The shot was slight quartering to her and she hit high on the shoulder it went through and out taking out ribs both in and out. There was about a 1/2" piece of rib laying on the ground where he was shot and a bunch of splattered blood. The lungs where almost in half.
Oh I forgot to mention its a carbine length gas system from Red X Arms. Cycles everything I run in my gun so far which is mostly 110 Sierra and 125 Nosler and Hornady.
I literally looked last night to maybe pick up another one and I saw they are making their 16" in 1-7 twist now.
Dang it I like my 1-10 I may need to switch it up now.
I literally looked last night to maybe pick up another one and I saw they are making their 16" in 1-7 twist now.
Dang it I like my 1-10 I may need to switch it up now.
justice06rr
Member
Seing you reload or plan to, then the 300BLK is a very attractive caliber because you can tailor different loads to your liking/uses and will not be affected by ammo supply/pricing as much.
with the lighter grain bullets you can definitely reach out to 200yards with the right load. Your comparison with 45acp is spot on, they're big powerful bullets that are great for short range.
I plan to start another 300BLK build sometime next year again when funds open up. Although if you think about it, all you'd need is a barrel, gas block/tube, and muzzle device. AeroPrecision uppers are $60 at their website so it is not expensive at all to build a separate 300BLK upper and pin it to your AR lower while using the existing BCG and mags. IMO that is one of the biggest advantages to this caliber that some people who don't know about the caliber fail to see.
I can probably build a complete 300BLK upper for around $250 if I wanted to. I'll have to wait next year after the holiday season to see how much the budget will allow.
Centurian22
Member
Some Links on the topic:
http://youtu.be/tgKjbySsAik
http://www.thebangswitch.com/1000-yard-shot-with-the-300-blackout/
http://youtu.be/tgKjbySsAik
http://www.thebangswitch.com/1000-yard-shot-with-the-300-blackout/
Tophernj
Member
All great info so far. Heading to the LGS right now to see if I can secure some 30 cal bullets and primers.
C
C
jason41987
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- Joined
- Apr 10, 2012
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- 1,293
why the shorter bullets in 300 aac?.. wasnt it designed to use longer bullets without sacrificing powder capacity by the mouth of the case being further back? or is it really just a necked up 223?
LebbenB
Member
I've got the same barrel set up and I've shot everything from 110 to 220 out of mine with no issues. That includes both commercial and hand loaded ammo.
Tophernj
Member
It's a .223 case, cut off at the shoulder, re~formed, primed/powdered/topped with bullet of choice. Shorter than a 223 case.
C
Shorter bullets because they are lighter and can get up to usable speed with the diminished case capacity. Remington did make a hollow nose bullet just for this application too. Longer .30's get into subsonic.
A necked up 5.56 case would rub on the ribs and have feeding problems. Look at the 7.62x40 WT that gets a little more velocity over the BO for supersonic use, but sacrifices in needing to use modified, deribbed poly mags.
Tophernj
Member
I picked up a box of 168gr A-Max and some primers.
Nothing like putting the cart before the horse. I still need to finish the gun. And seeing as how hard a time I'm having picking out a trigger, that might be a minute.
C
Nothing like putting the cart before the horse. I still need to finish the gun. And seeing as how hard a time I'm having picking out a trigger, that might be a minute.
C
I built a .300, Palmetto State Armory upper and lower and an AR15Hardware.com barrel. I went .300 over 6.8 because I like the parts interchange with standard AR15s. Plus I already had .30cal bullets and a bunch of 223 brass. I reload for small rifle, so all I really needed was powder, brass and dies. I'm currently loading 18.5gr of Lil Gun under a Hornady 125gr SST. I made a 154 yard shot on a 100lb whitetail this weekend, the bullet exited out the offside shoulder blade. I am pleased so far.
HisStigness
Member
I built my upper with a double star assembled upper receiver and mated it to an ar stoner 16" 1 in 8 twist medium profile stainless steel barrel (carbine gas port). I use the bcg that came with my .223 ar. I added a free float railed handguard from Amazon (grg manufacturing). I am quite pleased with the accuracy, and used it to get my first deer.
Part interchangeability is great with 300blk because you can use standard magazines and don't need to buy a modified bolt. I borrowed my buddy's lathe to cut 223 brass below the shoulder, and just ran it through a full length resizing die like normal and it worked great.
Part interchangeability is great with 300blk because you can use standard magazines and don't need to buy a modified bolt. I borrowed my buddy's lathe to cut 223 brass below the shoulder, and just ran it through a full length resizing die like normal and it worked great.
Tophernj
Member
So, here's what I"ve got so far... Or, I'm getting in the near future. I've finally made a decision on the trigger.
Mega Arms multi cal forged lower.
LPK less the trigger group from Midwest PX
Magpul MOE grip
ALG-ACT trigger
ACE Skeleton stock, standard length.
That should be about it for the lower. For the upper, I'll go with a shot peened/MPI'd BCG and I'm looking for a 1/8 twist bbl in 300AAC Blackout with a carbine length system. Everything will be headspaced. I'm thinking that I'll go with a free float tube of some kind, just not sure if I want a rail on top or not. Most likely I will go with a rail so that I can add if need be. Glass will most likely be a Weaver 3-7x20. It's a decent little scope. If not that, then I'll probably go Nikon. Not sure which one as I don't like the BDC reticle. But, I'll get there when I get there.
Any thing I'm forgetting, please let me know. This will be a 4-6 month project as funds ebb and flow in my life. Right now I'm good, but, that will change.
C
Mega Arms multi cal forged lower.
LPK less the trigger group from Midwest PX
Magpul MOE grip
ALG-ACT trigger
ACE Skeleton stock, standard length.
That should be about it for the lower. For the upper, I'll go with a shot peened/MPI'd BCG and I'm looking for a 1/8 twist bbl in 300AAC Blackout with a carbine length system. Everything will be headspaced. I'm thinking that I'll go with a free float tube of some kind, just not sure if I want a rail on top or not. Most likely I will go with a rail so that I can add if need be. Glass will most likely be a Weaver 3-7x20. It's a decent little scope. If not that, then I'll probably go Nikon. Not sure which one as I don't like the BDC reticle. But, I'll get there when I get there.
Any thing I'm forgetting, please let me know. This will be a 4-6 month project as funds ebb and flow in my life. Right now I'm good, but, that will change.
C
LebbenB
Member
Your options for forends are wide open. It just depends on how wide you want to open your wallet, LOL.
BoilerUP
Member
I have a UTG 13" Super Slim enroute for a AR22 build...I plan to do a comparison with my MI SS15G2. The few reviews online about them so far seem to be favorable...for $91.99/shipped from Amazon (just over half that of a SS12G2) I figured it was worth a shot.
Tophernj
Member
Yeah, forend choice is gonna have to wait.
Does anyone have any experience with Satern Machining barrels? They have something close to what I'm looking for. I'm willing to compromise aesthetics for the sake of a few bucks but only as long as the end product performs well.
C
Does anyone have any experience with Satern Machining barrels? They have something close to what I'm looking for. I'm willing to compromise aesthetics for the sake of a few bucks but only as long as the end product performs well.
C
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