Cartridges of the World - has BLK now

Discussion about rifles in 300 AAC BLACKOUT (7.62x35mm), hosted by the creator of the cartridge.

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300Blk
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Cartridges of the World - has BLK now

Post by 300Blk »

http://www.amazon.com/Cartridges-World- ... roduct_top

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125 grain at 2393 fps? I don't see how. They cite Hodgton, but...

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Kublah
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Re: Cartridges of the World - has BLK now

Post by Kublah »

They skipped a few lines. That hogdgon page you cite has 20.5gr of lilgun @ 2393 fps...but its the 115gr bullet.
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300Blk
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Re: Cartridges of the World - has BLK now

Post by 300Blk »

How is optimum performance for supersonic rounds not attainable in an AR15?

Also while I agree there is debate on twist, I am comfortable that I actually prefer fast twist for supersonic. I know of research showing that it helps supersonic terminal performance with expanding bullets.

I kid you not - I want 1:7 twist for my next 308 specifically for normal supersonic ammunition.
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700PSS
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Re: Cartridges of the World - has BLK now

Post by 700PSS »

300Blk wrote:How is optimum performance for supersonic rounds not attainable in an AR15?

Also while I agree there is debate on twist, I am comfortable that I actually prefer fast twist for supersonic. I know of research showing that it helps supersonic terminal performance with expanding bullets.

I kid you not - I want 1:7 twist for my next 308 specifically for normal supersonic ammunition.
Have you done anything with your 1:4 barrel in .308 yet? Also, I have one of the 1:8 AAC barrels in .308 on my Rem. 700 PSS (of course). 8)
"Common sense should be rebranded as uncommon practical knowledge of things you should know.”-nolwark76
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300Blk
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Re: Cartridges of the World - has BLK now

Post by 300Blk »

110 VMAX explode in mid-flight above 2050 fps in 1:4 twist (350,000 rpm).

So I have decided that 1:4 twist is too fast for most barrel lengths (unless you want to only shoot solid copper).
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Re: Cartridges of the World - has BLK now

Post by PAPI »

You might consider trying out the " CEB .308 ; 100 grn/ 130 grn ESP Raptors "
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http://site.cuttingedgebullets.com/

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700PSS
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Re: Cartridges of the World - has BLK now

Post by 700PSS »

300Blk wrote:110 VMAX explode in mid-flight above 2050 fps in 1:4 twist (350,000 rpm).

So I have decided that 1:4 twist is too fast for most barrel lengths (unless you want to only shoot solid copper).
:shock: Good to know. Thanks. Guess I'll stick with 1:8 or 1:7 for .308 and 300 BLK use.
"Common sense should be rebranded as uncommon practical knowledge of things you should know.”-nolwark76
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