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.308 powder ???'s

Discussion in 'Handloading and Reloading' started by biga972, Oct 3, 2011.

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  1. biga972

    biga972 Member

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    I have been reloading for a .308 AR it seems to have a lot of powder blast from the muzzel....It has quite a bit about double that of factory loads.

    I am using 41.5 grns of Tac which sould be about mid range..This is what gave me the tightest group.

    Any ideas (am I just using the wrong powder)
     
  2. Funshooter45

    Funshooter45 Member

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    I can't say for sure about muzzle flash. I just don't notice if it's there or not. I did try TAC a few times and I couldn't get the accuracy that I got out of Varget. But after using Varget for quite awhile, with good results, I have switched over to RL-15 with even better (slightly) results.
     
  3. biga972

    biga972 Member

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    I like varget but could not get it to meter very well out of my powder drop.
     
  4. rozziboy18

    rozziboy18 Member

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    been there done that brother!

    worked up a load for my dpms 308lr 2 years ago and started with imr 4350 then went to varget, and ended with rl15. give the rl15 clean burning low flash and accurate as all get out behind a 175 grain smk!
     
  5. Slamfire

    Slamfire Member

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    I don't know a solution.

    This weekend I was shooting my 24" Match rifle in 308. The guy running the line came over and said my rifle was producing fireballs at the end of the muzzle.

    I was shooting 168 Nosler's with 38 grains IMR 4895, not a hot load at all.


    I have seen more and larger fireballs with guys using ball powders.
     
  6. grubbylabs

    grubbylabs Member

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    You could also try IMR 4064 It works very well for the 308.
     
  7. REL1203

    REL1203 Member

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    i started with TAC, very quickly tried Varget and RL15, and settled on RL15 and its awesome. Just dont meter worth a crap, but i have a chargemaster I use for my DMPS SASS and R700AAC reloads.

    Try RL15, you wont regret it.
     
  8. biga972

    biga972 Member

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    So you are saying that rl15 does not meter very good .......or are you talking about the varget......I have used varget and know it does not meter very well.
     
  9. Funshooter45

    Funshooter45 Member

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    Varget and RL-15 meter about the same. I don't think it's all that bad though. Using the Lee Perfect Powder measure, about 8 out of 10 drops are within 0.1 gr. Not quite as good with my Lyman 55 measure. But I load slowly and weigh each load.
     
  10. Rob96

    Rob96 Member

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    RL-15 here as well for 308 Winchester.
     
  11. biga972

    biga972 Member

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    I have looked at the rl15 load data.....here is a question for all you RL15 users.


    The data I can find real quick on the RL15 only has one load.....How do you know where to start and end? I have been used to vargets website giving a starting load and a max load.
     
  12. mtrmn

    mtrmn Member

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    42 gr TAC (or surplus 4895) over Widener's 145gr FMJs is my go-to load for general shooting. Easily groups within 1.5" at 100 with some 3-shot groups in the .5" range. Have noticed no big fireballs with my 20" BAR10 (old bushmaster) with a YHM Phantom flash hider. Where I DID notice the huge fireballs was with Brown Bear ammo. I have not loaded for pure accuracy as of yet and may very well change my powder like others have in the future, but I've had zero problems with TAC.
     
  13. Funshooter45

    Funshooter45 Member

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    Yeah, Alliant does it different than Hodgdon for load data. Alliant gives only their MAX load. It is up to you to know that the usual starting load is 10% less than that. So, if they give a maz of 46.0 gr of RL-15, the normal starting load would be 41.4 gr.
     
  14. Flintknapper

    Flintknapper Member

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    Rl-15
    imr 4350
    h322
     
  15. MEHavey

    MEHavey Member

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    :scrutiny:
    And therein lay the problem. :scrutiny:
    That particular combo produces only 35ksi -- leading to underburning/dumping 4% out the 24" muzzle.
    Had you used more powder -- say 44gr @ 53.5ksi -- it would dropped that to ~1%. :)

    biga972's TAC load (168gr bullet?), however, should have been a 99% burner. What primer did you use?
     
  16. jack44

    jack44 Member

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    varget for my .308 and .223
     
  17. Jasper1573

    Jasper1573 Member

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    +1 for RL-15...tried Varget, IMR 4064, Win 748, IMR 4895, and so on. Found the best accuracy with RL-15...42.5 to 43 grains under an SMK 175 or Hornady AMAX 178, and it will shoot very consistently in a .308 Win with 1:11 twist 24 inch barrel. I vary the charge for summer and winter a few tenths of a grain as I find RL-15 is slightly susceptible to summer vs winter temp changes. IMR 4064 works well also and requires about .5 grain less than RL-15 to get similar performance, but the IMR 4064 doesn't meter well at all. I have to trickle every charge.
     
  18. nyc71

    nyc71 Member

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    For the most part same here, I also use H335.


    "They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety"- Benjamin Franklin
     
  19. Strykervet

    Strykervet member

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    I like Varget in autoloaders. I weigh each load and went to a digital dispenser, so the powder's metering qualities mean nothing to me. Every load gets trickled.

    I haven't tried it in .308, but the H335 works well in 6.5Grendel and 5.56mm.
     
  20. 1stmarine

    1stmarine Member

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    Varget gives you several benefits. Easy to meter(hard to overload), good in may barrels and it is almost insensitive to temperature changes. Something very important in hunting season with the cold weather. You see spread variations of single digits when in others you might see in excess of 100fps difference when the thermometer drops.
    I use other powders but for a nice hassle free reloads varget is the ticket. CCI primers are good.
     
  21. biga972

    biga972 Member

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    using cci LR
     
  22. jmorris

    jmorris Member

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    I prefer 748 over TAC but if 41.5 of TAC gives you the best groups just keep you eye on the target when you pull the trigger and you won't even notice the flash.
     
  23. Jim Watson

    Jim Watson Member

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    I would not say it is "up to you to know...", the opening page of the Alliant data site clearly states it. Now if you get into such a big rush to see some numbers as to ignore the introduction, you end up with the problem above. It IS up to you to read and understand the instructions.
     
  24. USSR

    USSR Member

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    That's a good midrange load, SlamFire. I use the same load with 37.2gr of IMR4895 for 200 yard competition. That's the nice thing about IMR4895. You can download it and get good accuracy at modest velocities. I tried the same thing with both Varget and RL15, and found out they are not particularly good at low pressure levels.

    Don
     
  25. Rockfish61

    Rockfish61 Member

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    I have been competing in F-Class with my 308 POF 20", 1-10 RH twist. Currently (on a calm day ) I have been holding less than 1 MOA at 1000 yds using Sierra 155 HPBT Match (not the Palma), 44.9gr IMR 4320, CCI LR, Hornady Match Brass, COAL 2.800. Measured velocity was 2705 +/- 18 at 6ft from the muzzle on 10 rnd strings. I tried a lot of different powder/primer configurations to get there.

    Every rifle is different and it takes time to work up that "Sweet Load"

    I am currently working up a load for the 175s.
     
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