Lapua factory 338LM 250 Scenar?

Discussion in 'Reloading' started by Trikstr, Jan 5, 2012.

  1. Trikstr

    Trikstr Well-Known Member

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    Anybody know what powder is used. I would think Vhita.
    I weighed 2 loaded and 2 empties and subtracted the diff and came up with 88 grains powder. Shaking a loaded case you can barely feel some powder movement.
    Playing with Quickload I found the following. OAL 3.605" my measurement.
    CIP max press 60916
    V V N160=3021 fps @ 69527 psi load density 108%
    V V N165=2951 @ 63033 ld 104.6%
    V V N170=2700 @ 46260 ld 104.6%
    V V N560=3058 @ 61403 ld 101.3%
    V V N570=2703 @ 39431 ld 98.2%

    Chrono'd 3 shots yesterday
    Hi-2958
    Lo-2934
    Av-2949
    Es-24
    Sd-13

    Looks like the N560 load is closest for volume and not to far off on vel. and slightly over press.
    N165 was really close to chron'd vel. but press is high.
    I'd like to be able to duplicate this load.
    PM'd the Lapua guy haven't heard back yet.
     
  2. Trikstr

    Trikstr Well-Known Member

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    Found a 3rd edition VihtaVuori manual. Here is what it shows for the 250 Scenar.
    Max.
    N560-85 grn @ 2891
    N165-85.9 grn @ 2816
    N170-97.1 grn @ 2911

    Anybody have a newer edition?
     
  3. Kevin Thomas

    Kevin Thomas Well-Known Member

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    Trkstr,

    The most current and up to date relaoding information for the Vihtavuori powders can be found on line at www.lapua.com. You'll find it under the reloading heading, and then listed by cartridge.

    If I'm understanding your original question, though, you aren't looking for loading data, but info on what powder is used in the factory loadings, correct? There's actually several different powders that may be used here, and not all of them are cannister grade propellants. As with most manufacturers, there can be any of a number of different powders used in any loading, so long as they all meet the standards set by the manufacturer for accuracy, velocity, pressure limits, port pressures (if applicable) and a few other variables. Not trying to dodge the question here, but that's how it's done. This doesn't apply to just Lapua ammo, either, but virtually any and all comercial ammunition makers.

    Sorry if this doesn't really answer your question, but the bottom line is there isn't just one answer to this question.

    Incidentally, I never got your PM. Might want to recheck that one and see if it was sent to me?
     
  4. Trikstr

    Trikstr Well-Known Member

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    Thanks for the reply Kevin. I kinda thought that they might have been loaded with something not available to reloaders. Just ordered some 250 Scenars to experiment with. Still working on getting my first 50 cases fireformed and seeing what kind of accuracy potential the TRG has. Looks very promising so far. Heading to range again pretty soon.
    Thanks again
    Brian
     
  5. Kevin Thomas

    Kevin Thomas Well-Known Member

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    No problem at all Brian, and glad to help! Incidentally, my bad here. I checked my inbox and found your original PM. Had a major hard drive crash while I was on the road a few weeks back . . . right about the time you sent the PM. I was totally off line for a week or two while I got my computer back up, and managed to miss the original message. Again, my apologies.

    Might cheer you up to know, but we're using TRGs as our test actions for accuracy and pressure firings in our Mesa operation. Good actions, and great shooters, but I'm sure you knew that already. :)
     
  6. marioq

    marioq Well-Known Member

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    Kevin,

    How is that 250 Scenar as a hunting round? I know it does well in accuracy. Just curious about performance... Getting my first Lapua 338 soon and I am excited and trying to learn all that I can.

    mario
     
  7. Trikstr

    Trikstr Well-Known Member

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    First attempt at a 1000 yd group.
    50 deg
    wind 3-4 gusting to 11 mph
    elev 5050
    25% rh
    Didn't try any more as wind really picked up. Dust everywhere, blew over chrono and bent allthreads for skyscreens.
    Orange square is 6" across.
    On target calculated Max spread-6.437" = .618"MOA
     

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  8. snowpro440

    snowpro440 Well-Known Member

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    Anyone try the WC867 powder in the338 lapua ? I was thinking of getting some as I see more people are using it for the 300rum and other magnum calibers with 200 -250gr bullets. Can anyone run quickload for a 225gr and a 300 gr bullet with wc867, mag primer in the lapua case ?
     
    Last edited: Jan 15, 2012
  9. Trikstr

    Trikstr Well-Known Member

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    SnowPro440

    That powder isn't listed in my version V 3.6 of QuickLoad. Sorry. Also need to know what brand of bullet and OAL length.
     
  10. snowpro440

    snowpro440 Well-Known Member

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    338 lapua shooting WC867 powder which is AA8700 acording to loading data with 300smk's at a coal 3.850-3.860 fed mag primer.thxs Trikstr.
     
  11. Trikstr

    Trikstr Well-Known Member

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    I'm at work now. Don't have my laptop with me.
     
  12. rifle hunter

    rifle hunter Member

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    i use h 1000 shoots real well