Any one load IMR-4064 for 308?

Discussion in 'Big Stuff -- 6.5mm, 7mm, 30 Cal' started by Onereddawg, Apr 10, 2012.

  1. Onereddawg

    Onereddawg

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    First time i'm using this powder. At the starting grain of 45, the powder is right up into the neck. Is this right for this powder?
     
  2. Steve Blair

    Steve Blair Site $$ Contributor

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    For what bullet weight is 45 grains a starting load?
     
  3. bheadboy

    bheadboy Site $$ Contributor

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    45 gr is max on 150's and if the case is unfired it could be situation of unfired case, i never do or suggest a starting load of max, as you do not knowwhant you chamber/ bbl combo will do,

    if you are using 150, start lower.
    if heaver dont,
    if lighter, back off 1 or two and try it as you may have a tight chamber.

    Bob
     
  4. Onereddawg

    Onereddawg

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    Starting weight is 45 grains for the hornady 110 grain v-max at 2850fps. The chamber is not an issue its the amount of powder in the brass. The powder rises up into the neck of the brass. Is this correct for the amount of powder?
     
  5. Steve Blair

    Steve Blair Site $$ Contributor

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    What is the brass? (i.e.: Winchester, Lapua, etc.) Has it been fired or is it new? [br]
    In my once-fired Winchester brass which has a capacity of 57.50, 45.0 grains should be at approximately the case-shoulder junction. If you drop it with a 6" drop tube, you can probably get a little better density.
     
  6. bheadboy

    bheadboy Site $$ Contributor

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    if the brass is unfired, it should expand to the chamber when fired and this will become less of a problemas the 45gr with a 110 is a modest load.

    if brass has been fired in this chamber, then you have a chamber/brass combination that is on the smaller side, thus you may need to consider less 4064 or less bulky powder and most likely all loads will need to be on thelow side of "book"

    Bob
     
  7. boogershooter

    boogershooter Site $$ Contributor

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    I have had some good results with 4064 and 155 SMK, 168's and 175 SMK's in a 12 twist.
     
  8. Dans40X

    Dans40X Welder Site $$ Contributor

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    I've pushed 20,000+ out of a few 7.62 & 308 Win 1:10"-1:13" twist chambered barrels w/155's & 47.0gr of Dupont/IMR 4064 in Rem URBR cases.
    With Hodgdon/IMR powders I get lower velocities than the tried & trued Dupont/IMR powders.
     
  9. lloydx2

    lloydx2

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    Dan What about 42Grs with the old 190MK. I was right you are an ex highpower shooter?
     
  10. Dans40X

    Dans40X Welder Site $$ Contributor

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    lloydx2,
    Lots of variables?
    Give the 190's a shot w/ 4064.
    I've launched numerous boxes of 190SMK's from 600 to 1000yds.

    I run Rem URBR brass exclusively!
    Better consistency than Lapua of early or late, hands down.
     
  11. coreydelong

    coreydelong

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    Depends a lot on the cases. There is a lot of capacity difference between a 155g Winchester case and a 177g FC or Lapua case. For the money Winchester cases work just fine in a .308 for 1/4 the cost of Lapua brass.

    I mostly use 155 Scenars and 168 SMK's and use 44.0-45.0g in a Winchester or RP case... RP cases are 165g. The same load in a FC case and you will start popping primers.
     
  12. Leaddog

    Leaddog F-Class T/R Site $$ Contributor

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    4064 is a great powder for 168 SMK's, but heavier bullets do better with Varget, RL-15, or H4895.
     
  13. MrMajestic

    MrMajestic Site $$ Contributor

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    From the Cartridge Guide in the "Articles" section-
    Choosing the Right Powder and Load Testing
    For the 160-175 grain boattails used by the majority of .308 shooters, you want a powder of medium burn rate that gives close to 100% load density. The “classic” .308 load for 168gr SMKs is IMR 4064 with Federal primers. However, these days Varget is probably slightly more popular. Lot variance has frustrated Varget users, however. Jerry Tierney has had to tweak his .308 Palma Varget load up to two full grains to maintain optimal velocity. Tech Note: If you use QuickLOAD, we suggest you select data for ADI 2208 rather than Hodgdon Varget. This, we’ve found, will give more realistic numbers.
     
  14. newgun

    newgun Site $$ Contributor

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    I used a lot of it in my 1-10 twist but I have to say it did better with the lighter bullets. It was a lower cost powder and worked great for me. But I don't load for the 308 much these days.
     
  15. thefitter

    thefitter Site $$ Contributor

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    My loads for the 110 V MAX are all the way to the rim (50gr) in Varget or 8208. Just crunch it down you will be fine. FYI I crimp these.
     
  16. RJinTexas

    RJinTexas Site $$ Contributor

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    If 42.0gr/IMR4064 pushing a 168gr bullet won't shot in a .308 I suggest you throw the barrel away.

    RJ
     
  17. RMulhern

    RMulhern

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    Long ago IMR 4064 was a load that was used with the 190 gr. Sierra for LR and the oddity of this was that with the popular loading of 41-42 gr. it would give as much as 49 fps variation fired over the chrony yet....if you did your part....it would beat the whey outa the 10 ring from 600 yards! Never tried it with the lighter bullets! IMR4895 and 40.5 grs with the Sierra 168 was my favorite load for 2 and 300 yards!
     

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