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Old July 22, 1999, 08:26 PM   #1
b747mech
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I am planning on building a 7.62x39 upper for one of my AR-15's and have been researching available bullets, and load data for the cartridge. Seems nobody makes a match quality bullet, has anybody out there loaded 7.62x39 to say - .300 whisper specs which would allow use of Sierra's heavier .311 bullets? Loading with the 150gr shouldn't be a problem, already found some data for 'em, though the 172gr match .311 bullet would sure be nice to figure out a combination for. Anybody tried such and still got the pressures in good enough range to safely work the action of an AR-15?
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Old July 25, 1999, 12:04 AM   #2
lidman
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7.62x39 is a fairly slow round even with 123gr. slugs. I could look it up in my RCBS manual but, 150 is getting a little heavy to be able to maintain any significant velocity. I think you would get quite a bit of drop at any range past 200 yds.
Consider trying 123 or 125 grain slugs and getting the extra speed.
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Old July 25, 1999, 09:02 PM   #3
Yodar
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I've been reloading a Harris-design 150 gr cast bullet gas checked from Lee sized to .312 for the SKS for years.Use AA #2230 or AA Data 2200 (25 gr)
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Old July 26, 1999, 01:02 AM   #4
b747mech
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Thanks for the info

The 150gr Sierra will be tried first, though has anybody tried as heavy as 172gr in 7.62x39?

- Craig
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Old July 30, 1999, 08:46 PM   #5
TDB4
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I HAVE AN AK-47 AND A RUGER MINI-30 AND USED TO HAVE AN SKS. I HAVE LOADED A LOT OF 7.62x39 CARTRIDGE'S. I'VE USED BOTH .311 AND .308 WITH VERY GOOD RESULTS. MY MINI-30 HAS A .30 CALIBER BORE SO I ONLY USE HANDLOADS WITH .308 BULLET'S BUT IN MY AK-47 I USE BOTH .308 AND .311 BULLET'S. I NEVER GO OVER 150 GRAIN BULLET'S, THE PRESSURE MAY BE TO HIGH AND DANGEROUS! FOR MATCH SHOOTING I WOULD TRY A 125 GRAIN NOSLER BALISTIC TIP OR A BARNES 130 GRAIN BTX BULLET. FOR DEER HUNTING GO WITH SIERRA OR SPEER 150 GRAIN .311 SPITZER OR .308 SPEER BOAT TAIL SPITZER. THE 150 GRAIN SPITZER WHEN LOADED IN A 7.62x39 WILL BALISTCLY OUTPERFORM A 150 GRAIN .30-30 WINCHESTER!

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Old July 30, 1999, 08:58 PM   #6
TDB4
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I FORGOT I ALWAYS USED AA-1680 BALL POWDER EXCEPT ONCE I TRIED IMI-3031 STICK POWDER.

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Old July 31, 1999, 08:56 PM   #7
zot
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I use Lee's 160 gr gas checked lead bullet
with H335 23.5 grains for advertized fps
2000. this load operates AK action and doesn't lead barrel, also I use 8 grains Unique with same bullet in AK or SKS, sounds
like a light .38 special load, doesn't work the action, but quite and brass doesn't get
dinged up like with full loads. SR4759 with
a 180 gr. .303 bullet CAN work, but theres
no load data. it'd be a good suppresed round,
bullet weight goes up ,powder charge goes down, maybe 200 grain bullets would work if
ya knew a starting load, sub-sonic and still
work the action on a AR?
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Old July 31, 1999, 10:03 PM   #8
b747mech
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Actually, I'm not looking for a silenced load, the request for .300 Whisper data was made thinking data for the cartridge would be the starting point. The real desire is simply to be able to try one of Sierra's match bullets, and 172gr is the nearest weight for the cal. Though since all the good data which has been given, I'm really curious as to what my results will be. 150gr sierrs .303 SP and 150gr match .308 are first choice for accuracy checks and development. Thanks all...

Best regards - Craig.
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