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#5810897 - 06/29/15 09:36 PM 308 subsonic loads
300_WizzM Offline
Woodsman

Registered: 03/15/14
Posts: 243
Loc: Grand Saline, TX
Looking to make some subsonic 308. Any suggestions on where to start or find some load data?

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#5811626 - 06/30/15 01:05 PM Re: 308 subsonic loads [Re: 300_WizzM]
kmon1 Online   content
junior

Registered: 09/27/06
Posts: 22541
Loc: Texas
Hodgdon and Accurate powder companies both list subsonic data for the 308 in their online data.
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#5815774 - 07/02/15 10:53 PM Re: 308 subsonic loads [Re: 300_WizzM]
ckat Offline
Pro Tracker

Registered: 12/02/09
Posts: 1198
Loc: Lubbock Area
I have had the best luck with flat-based bullets... all of the boat-tails that I tried tumbled. I use Clays.

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#5815952 - 07/03/15 08:05 AM Re: 308 subsonic loads [Re: 300_WizzM]
DStroud Offline
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Registered: 11/02/11
Posts: 1661
Loc: Waco
I loaded some boat-tails and they also were a no go. I got 150 Flat nose bullets for a 30/30 type caliber and they worked well with AA5744
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#5816024 - 07/03/15 09:12 AM Re: 308 subsonic loads [Re: 300_WizzM]
300_WizzM Offline
Woodsman

Registered: 03/15/14
Posts: 243
Loc: Grand Saline, TX
What was the twist on the barrel. And thanks for the info.

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#5816070 - 07/03/15 09:56 AM Re: 308 subsonic loads [Re: ckat]
FiremanJG Offline
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Registered: 12/16/08
Posts: 23316
Loc: Wolfe City, TX
Originally Posted By: ckat
I have had the best luck with flat-based bullets... all of the boat-tails that I tried tumbled. I use Clays.


Good information there. up
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#5820121 - 07/06/15 04:52 PM Re: 308 subsonic loads [Re: ckat]
ChadTRG42 Online   happy
THF Celebrity

Registered: 09/16/09
Posts: 12193
Loc: Lewisville, TX
Originally Posted By: ckat
I have had the best luck with flat-based bullets... all of the boat-tails that I tried tumbled. I use Clays.


Any boat tail greater than an 11 degree boat tail will cause tumbling (i.e. stability) issues. The worst one's are the 168 SMK and 168 A-max. They tumble for the same reason as a subsonic as they do when they transition from supersonic flight. They cause turbulence behind the boat tail, and begin to yaw, and then tumble. I can load certain boat tail bullets for subs just as good as flat base. But a flat base bullet is a shorter bullet, and is easier to stabilize.
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#5822071 - 07/07/15 08:11 PM Re: 308 subsonic loads [Re: 300_WizzM]
boonee Offline
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Registered: 01/09/11
Posts: 2182
Loc: Mesquite/Canton
What Chad said, EVERY time I load something he said would NOT work. WELL... it didn't work.
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