Discussion about rifles in 300 AAC BLACKOUT (7.62x35mm), hosted by the creator of the cartridge.
Moderators: gds, bakerjw, renegade
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dellet
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by dellet » Mon Apr 23, 2018 10:58 am
It'll work.

<1700 fps, 22" penetration, fully opened at 3.5", double caliber expansion.
300 Blackout, not just for sub-sonics.
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rebel
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by rebel » Mon Apr 23, 2018 11:43 am
Shoots pretty good as well.

You can't beat the mountain, pilgrim. Mountains got its own way.
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smustian
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by smustian » Mon Apr 23, 2018 6:00 pm
Looks promising.
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rebel
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by rebel » Mon Apr 23, 2018 8:32 pm
I just threw that load together and got 1 moa. I am sure, with a bit more brass prep and TLC I can get sub moa.
I'll go out on a limb and say this is a gamechanger for this cartridge. A specific designed 150 300 blk bullet with a decent BC that expands at around 200 yards assuming a 2100 fps ( or so ) MV. I know what I'll be hunting with

You can't beat the mountain, pilgrim. Mountains got its own way.
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dellet
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by dellet » Mon Apr 23, 2018 11:25 pm
As always, plenty of things to check.
What powders will be best for which barrel length and deliver repeatable accuracy. So far +/- MOA has been pretty easy to achieve from 50-200 yards.
The biggest issue right now is to find the actual BC of the bullet. Speer claims .463, I think that’s wishful thinking. The Berger target 150fb is only .393, Sierra Pro Hunter is .346.
I used .340 to figure drop from 50 to 200 and hit a bit low. More testing will tell.
As time permits I’ll get a better info out here, if there is interest. Rebel is right, in a 16” barrel 200 yards should be no problem.
It would be good to see some others posting some results.
300 Blackout, not just for sub-sonics.
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gds
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by gds » Tue Apr 24, 2018 5:32 am
This has my interest. I honestly have not even heard of the bullet. Have to do some research.
Yes, I am a Baptist, and yes I carry a gun. You might think I carry a gun because I don't trust God. Well you would be wrong. I have complete faith in my Lord. It is mankind I have no trust in
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dellet
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by dellet » Tue Apr 24, 2018 11:38 am
Six shots at 50 yards, one inch dot for reference.
Six more shots after .005" seating depth adjustment. Note they are inside the previous six
Bright evening sun with a 5-7mph wind coming from about 10 o'clock.

300 Blackout, not just for sub-sonics.
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rebel
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by rebel » Tue Apr 24, 2018 11:51 am
Good shooting! I am with you on the BC, Speer numbers seem generous. Hopefully I can Labradar a couple shot strings this weekend and get some feedback.
You can't beat the mountain, pilgrim. Mountains got its own way.
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Sig220
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by Sig220 » Tue Apr 24, 2018 12:27 pm
Damn you guys....I was already settled in with my heaviest bullet weight being 130gn. Do ya'll mind putting some starting load info on here?
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rebel
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by rebel » Tue Apr 24, 2018 12:56 pm
You can't beat the mountain, pilgrim. Mountains got its own way.