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 338 ARC
#9123179
10/16/24 11:42 PM
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Joined: Jun 2015
Posts: 5,397
scottfromdallas
OP
THF Trophy Hunter
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OP
THF Trophy Hunter
Joined: Jun 2015
Posts: 5,397 |
I really don’t see the point of this one. I guess it’s a mini 8.6 blackout. Hard to believe there would be any expansion. 338 ARC
Last edited by scottfromdallas; 10/16/24 11:44 PM.
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Re: 338 ARC
[Re: scottfromdallas]
#9123406
10/17/24 02:48 PM
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Joined: Sep 2009
Posts: 19,220
ChadTRG42
THF Celebrity
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THF Celebrity
Joined: Sep 2009
Posts: 19,220 |
Cycling subsonic with expanding 307 grain SUB-X bullet in an AR-15 platform... What's not to like? I'm looking forward to playing with it now!!
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Re: 338 ARC
[Re: scottfromdallas]
#9123443
10/17/24 04:18 PM
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Joined: Aug 2021
Posts: 583
65x55
Tracker
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Tracker
Joined: Aug 2021
Posts: 583 |
Listening to the Hornady podcast now, sounds like special forces types wanted something subsonic that would be effective further than 300 BLK and fit in a AR-15. It'll be interesting to see how it performs in neutral testing, and what rifles its offered in.
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Re: 338 ARC
[Re: scottfromdallas]
#9127269
10/25/24 01:18 PM
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Joined: Jun 2019
Posts: 188
OddJob94
Woodsman
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Woodsman
Joined: Jun 2019
Posts: 188 |
I think I'll be sticking to .458 SOCOM myself.
I just started load development for the 410 Grain SUB-X @ 1065 FPS. 1:22 twist stabilized them and they printed a 1.5" group at 50 Yds. And surprisingly enough cycled the bolt without the suppressor.
More testing is needed now that I feel safe putting the suppressor on.
It would be hard to beat a rifle that can reliably send round 1 subsonic then have 8 rounds of 300 Grain JSP @ 1990 FPS as follow up shots.
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Re: 338 ARC
[Re: OddJob94]
#9127294
10/25/24 02:02 PM
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Joined: Dec 2008
Posts: 42,394
J.G.
THF Celebrity
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THF Celebrity
Joined: Dec 2008
Posts: 42,394 |
I've loaded .458 SOCOM supers, but never subs.
The supers were quite impressive at how they grouped and the velocity they made.
It is a neat cartridge.
![[Linked Image]](http://www.precisionriflehunters.com/wp-content/uploads/2017/07/garvey.jpg) 800 Yard Steel Range Precision Rifle Instruction Memberships and Classes Available
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Re: 338 ARC
[Re: scottfromdallas]
#9127298
10/25/24 02:07 PM
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Joined: Jun 2009
Posts: 4,285
Korean Redneck
Extreme Tracker
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Extreme Tracker
Joined: Jun 2009
Posts: 4,285 |
I'll probably never own but seems much more interesting than 8.6 blackout to me.
I'm a dude who likes long barrels!
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Re: 338 ARC
[Re: Korean Redneck]
#9127656
10/25/24 11:52 PM
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Joined: Jun 2015
Posts: 5,397
scottfromdallas
OP
THF Trophy Hunter
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OP
THF Trophy Hunter
Joined: Jun 2015
Posts: 5,397 |
I'll probably never own but seems much more interesting than 8.6 blackout to me. Interesting. I think the 8.6 Blackout has more to offer although I’m not really interested in subsonic rifle suppression. If I was, I think the 300 Blackout would be plenty. The 8.6 Blackout is relying on a 1 in 3 twist to get bullet expansion. I believe the 338 ARC is 1 in 8.
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Re: 338 ARC
[Re: scottfromdallas]
#9128661
10/28/24 12:09 PM
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Joined: Jun 2009
Posts: 4,285
Korean Redneck
Extreme Tracker
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Extreme Tracker
Joined: Jun 2009
Posts: 4,285 |
I'll probably never own but seems much more interesting than 8.6 blackout to me. Interesting. I think the 8.6 Blackout has more to offer although I’m not really interested in subsonic rifle suppression. If I was, I think the 300 Blackout would be plenty. The 8.6 Blackout is relying on a 1 in 3 twist to get bullet expansion. I believe the 338 ARC is 1 in 8. The 8.6 blackout just always seemed too strange to me. The barrel twist requirement is strange. I get the explanation behind it but still weird to require a very unique twist. Also, I barely know anything about subsonic loading but seems like one doesn't need that much case capacity so why not in a ar15 based system. No real evidence for this thought, just a gut hunch.
I'm a dude who likes long barrels!
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Re: 338 ARC
[Re: scottfromdallas]
#9132324
11/04/24 03:31 PM
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Joined: Dec 2010
Posts: 1,500
Blanco
Pro Tracker
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Pro Tracker
Joined: Dec 2010
Posts: 1,500 |
Seems intriguing, appears it would put a good deal more energy on target than the 300BO.
I would like to try some subsonic heavy projectiles in my 450 Bushmaster...
So many new cartridges and only so much time to play...
Last edited by Blanco; 11/04/24 03:31 PM.
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