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Powder Suggestions For .308

Discussion in 'Reloading' started by F106 Fan, Sep 2, 2012.

  1. F106 Fan

    F106 Fan

    8,033
    268
    Oct 19, 2011
    I am loading the Sierra 168 gr HPBT Match with 42.2 gr of IMR 4064. It shows real promise at 300 yards - even with a 6x scope, I am holding about a 2" group (well, there are some flyers but they are called bad and are definitely my fault).

    I am planning to buy 8# of IMR 4064 and 5k or Federal Gold Medal LRP. But I thought I might as well consider some other powders if there is something that is highly recommended. I have tried Reloaders 15 but they don't seem to shoot quite as well. But I am open to suggestions.

    I have plenty of weight left in my HazMat fee...

    Thanks
    Richard
     
  2. Hoser

    Hoser Ninja

    2,350
    38
    May 22, 2002
    I guess you could try something other than Varget, but why?
     


  3. GIockGuy24

    GIockGuy24 Bring M&M's

    4,037
    5
    Jul 14, 2005
    With Amber Lamps
    It's hard to beat IMR-4064 in 308 Winchester, and it is temperature insensitive as the Hodgdon "Extreme" powders. The other IMR powders are a bit more temperature sensitive but not as much as ball powders. I have excellent results with IMR-4895 with 168 grain bullets. H4895 can be accurate but usually is not as accurate as IMR-4895 in 308 Winchester. A2495 is made in the plant in Canadian as the IMR powders and the only difference between it and IMR-4895 I can tell is it has more flash. The other powder than often gives good results is IMR-3031.

    A4064 seems the same as IMR-4320 and not similar to iMR-4064. Both IMR-4320 and A4064 are short grain powders. They work alright in 308 Winchester but pressure builds without increasing velocity.

    Varget can be accurate but really beats up my gas operated rifles, or I have to download it to the point of low velocities.

    It looks like the Federal American Eagle 168 grain OTM M1A load uses 42.5 grains of IMR-4064. It has a crimped primer and uses CCI #34 primers. In a lighter weight case it would equal about 43.0 grains of the same powder, which starts getting compressed. CCI #34 primers never give me the best accuracy. Winchester primers seemed to have gotten worse. I use a lot of Remington 9 1/2 primers, sometimes Federal 210M primers or CCI BR2 primers.

    In military cases I use 41.0 grains of IMR-4895 or 42.0 grains of IMR-4064 with 168 grain bullets.

    Over 20 years ago, the original Gold Metal Match load was 41.0 grains of IMR-3031 in the old Federal commercial cases. That's pretty hot for autoloading rifle though. Later it used IMR-4064 and now RL-15. Lyman's accuracy load was 39.5 grains of IMR-3031 which isn't a bad load.
     
  4. shotgunred

    shotgunred local trouble maker

    8,728
    948
    Mar 1, 2008
    Washington (the state)
    Varget is about as good as its going to get for 308.
     
  5. Zombie Steve

    Zombie Steve Decap Pin Killa

    18,083
    18
    May 31, 2007
    Old Colorado City
    Bolt gun - Varget hands down.

    M14 - IMR or H4895.
     
  6. varget is my primary and reloader 15 is my back up if need be
     
  7. F106 Fan

    F106 Fan

    8,033
    268
    Oct 19, 2011
    I have 8# of TAC for .223 so I can try it for .308

    I will order some Varget because I can use it for both .308 and .223

    I will order some IMR4895 for my M1A and some more IMR 4064 to duplicate what I have been loading.

    I'm going to go shooting on Wednesday (range is closed to public, open to members and much more enjoyable) to see if I am really getting the results I think I am getting with the IMR 4064. I loosened up the neck tension to 0.001" so I want to see what effect that will have.

    I really want to spend time working with my Steyr SSG. It can be a fine shooting rifle if I do my part. There was a time when I shot it pretty well but it's been about 20 years since I spent much time with it.

    Richard
     
  8. sourdough44

    sourdough44

    3,019
    131
    Jul 23, 2007
    WI
  9. GIockGuy24

    GIockGuy24 Bring M&M's

    4,037
    5
    Jul 14, 2005
    With Amber Lamps
    TAC and A2520 work well as far as ball powders go.
     
  10. 10mmbob

    10mmbob

    99
    0
    Jan 26, 2010
    IMR 4064 is all I use for .308. I shoot 150gr, and 168gr. bullets in my LR308. I also use it for my .300WSM. Benchmark, TAC, and Varget all work well, but not better than 4064. I tend to be a powder collector, but have settled on 4064. Good Luck!
     
  11. Zombie Steve

    Zombie Steve Decap Pin Killa

    18,083
    18
    May 31, 2007
    Old Colorado City
    4064 will work fine for your M1A... just don't go any slower burning than that. If I were you and already had loads for 4064, I'd just bulk up on that.
     
  12. ROGER4314

    ROGER4314 Friends Call Me "Flash"

    292
    34
    Dec 26, 2008
    East Houston
    I shot a lot of matches with military shooters and the best shooter of them all gave me the Marine Corps competition loads. They use IMR 4895 in 30-06 and .308/7.62 Nato. In cold weather, they change to 748 powder. Those loads work well so I never tried to improve perfection.

    Flash
     
    Last edited: Sep 3, 2012
  13. PCJim

    PCJim Senior Member

    2,950
    1
    Aug 4, 2008
    FL
    Another fan of Varget and H4895. Varget under a 168gr SMK in MY SPS will group 5 shots under .6" at 100yds when seated .020 off the lands

    As always, remember that every rifle is different. Some tweaking will always be required.
     
  14. byf43

    byf43 NRA Life Member

    11,715
    292
    Apr 13, 2006
    Southern Maryland
    W-748 and Sierra 168 gr MatchKing, or H-4895 and the same bullet has given me really good accuracy.
     
  15. jolly roger

    jolly roger

    720
    1
    Apr 28, 2001
    Knob Creek
    4064 meters like **** but shoots the best of any I have tried. RL15 and Varget are very close though in accuracy with none of the metering hassles. 4064 though is magical in both my 700P and M1A.
     
  16. F106 Fan

    F106 Fan

    8,033
    268
    Oct 19, 2011
    I have been trickling the charges so metering hasn't been an issue. Still, I get pretty consistent results using an RCBS Uniflow except, every once in a while, it will throw about 0.3 gr heavy.

    I'll eventually have either the Hornady or RCBS automatic powder measures and they should handle the stick powder very well. I hope...

    Richard
     
  17. Murphy's Law

    Murphy's Law

    552
    3
    Nov 1, 2007
    Tampa, FL
    Surprised no one has mentioned H335. Although Varget is my primary "go to", H335 runs a very close 2nd.
     
  18. byf43

    byf43 NRA Life Member

    11,715
    292
    Apr 13, 2006
    Southern Maryland

    H-335 and W-748 are very similar.

    In 5.56x45mm, H-335 is all that I use.