Share your 300 Blackout Loads here>

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ar15fanboy
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Re: Share your 300 Blackout Loads here>

Post by ar15fanboy »

82nd airborne wrote:For bolt guns, I like 5.6g of Unique below a 220 for a 16" barrel. It is nice and quiet, actually really really quiet, you will have to bump it up a tit bit for longer barrels.
Airbourne, how much case volume does it fill? Have you tried this load on the AR platform? I have quite a bit of this powder and was hoping it would work well enough to cycle a gas gun. I have planned to get the Noveske 10" upper. Thanks.
82nd airborne
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Re: Share your 300 Blackout Loads here>

Post by 82nd airborne »

I havent loaded any of those in a couple months, so case volume would be a wild guess. Its not much, but unique is not very position sensitive.
It wont cycle an AR. Even a 16" bbl with a pistol system wide open will be glitchy.
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Houston Armory
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Re: Share your 300 Blackout Loads here>

Post by Houston Armory »

Project
get 220 Hor Round Nose Soft Point
load 10gr IMR 4227
Case factory rem AAC 300 BLKOUT Rem primer
Cycle in 9 in factory AAC with Thunderbeast 30P-1
lower HK416 with PMAG 20rd
conclusion that bad boy works like a dream spite it looks like front of a Buick
Summary 220 Round Nose feeds fine in my AR Bill Pace
Bill Pace
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832-675-4854
Come out for Friday Night Guns!

Stocking Dealer:
Advanced Armament Corp,Gemtech,Knights,OPS INC,Silencerco,SWR,Surefire,DeGroat,&ThunderBeast
liquidsniper
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Re: Share your 300 Blackout Loads here>

Post by liquidsniper »

plamondacheq wrote:Anyone have a recipe for 125 gr nosler bt's by chance?
Here was my recipe for 125gr noslers.

17.5 Gr of H110
Remington 7.5 primers
COAL 2.076

Sorry, no chrono data on these but I shot 160rds of this through my 8in Noveske upper and it ate them all up no problem. Cases had no signs of overpressure.
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300Blk
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Re: Share your 300 Blackout Loads here>

Post by 300Blk »

That load strikes me as probably weak.
82nd airborne
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Re: Share your 300 Blackout Loads here>

Post by 82nd airborne »

One of my favorite AR loads in the BLK is
the old Herters 150gr flat base soft point
Loaded to 2.195"
15.7g H110.
It expands very nicely and the flat base works well in the BLK.

Good luck finding some though, I had a bunch left from my grandfather.
Regards,
Aaron Fouraker
Co-Owner
Delta Company Arms, LLC
(918) 332-6503
[email protected]
www.deltacompanyarms.com
IN GOD WE TRUST.
jasonusvi
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Re: Share your 300 Blackout Loads here>

Post by jasonusvi »

Put them in AmmoGuide so they are sortable by projectile weight and powder? Then can also use the velocity estimator to check projections for your particular barrel length. Relatively cheap subscription and just makes sense to compile all this data somewhere.
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300Blk
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Re: Share your 300 Blackout Loads here>

Post by 300Blk »

I will work to get verified load data published.

After the powder and bullet companies put out load data, then sure - people should collect it all in one place here.
tmbg
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Re: Share your 300 Blackout Loads here>

Post by tmbg »

what's the max chamber pressure for blackout?
HotLead
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Re: Share your 300 Blackout Loads here>

Post by HotLead »

jhrgr wrote:
imyomama wrote:10 grains of 4198 on 9" upper suppressed .. right at 1050 fps ..
18gr of h110 .. same upper .. 125 sierra spitzer around 2050 fps..

H4198 or IMR-4198 - How interchangable are they ??

The burn rate is almost identical between the two, but Hodgdon 4198 has a coating to reduce temperature sensitivity that may help keep your subsonic loads more consistant.
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