.338 snipetac

Discussion in 'Big Stuff -- 6.5mm, 7mm, 30 Cal' started by calib, Jul 27, 2018.

  1. calib

    calib

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    I am starting this thread to hopefully pull some up to date info on the .338 snipetac since many posts and threads are years old. I think with current and soon to be on the market bullets this cartridge will become more popular.

    My build: 338 snipetac
    Built by Dallas at Lane Precision
    Built on a BAT c.t. slightly customized to help with idaho hunting weight limits.
    -32" rock creek barrel with a terminator t4 brake.
    -McMillan at with carbon shell.
    -Evolution bi pod and mount.
    -Nightforce nxs with titanium 6 screw rings.

    Firing bertram factory brass
    Berger 300 grain otm's
    Federal 215m

    So far h50bmg, will be trying the 20n29, not excited but may try the 869.

    Any suggestions on powder? So far this rifle has about 20 rounds through it all on virgin brass. We have ran up to 3180 fps with 138 grains of the h50bmg. Will start running formed brass and see the difference also the barrel will speed up so wondering what velocity this may show.

    We are really anticipating the berger 330 or 329 grain that has been talked about as well as the possible 325 grain smk. 20180724_201155.jpg
     
    simo hayha, 300_whisper and x_wolf like this.
  2. CA48

    CA48

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    RL-50 is another option.

    I run a 338AM
    Prepped Bertram brass
    300 OTM's
    Fed 215
    142gr H50bmg
    3250fps
    32" lilja bbl

    It will run faster but accuracy and brass life are great where it's at now.
     
    calib and LA50SHOOTER like this.
  3. wvlongshot

    wvlongshot Gold $$ Contributor

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    Those numbers are almost identical to my 338 cheytac. 143 grains h50bmg and 300 otm tactical Berger @ 3250
     
    Dave Hull and calib like this.
  4. yorketransport

    yorketransport

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    338 Big Baer on a CT model 310 action with a 30" Bartlein 1-9" twist barrel.

    140gr H 50BMG and a Fed 215m gives 3180fps in Bertram brass with a 300gr OTM. It can go faster but it shoots well and brass has 6 firings and still holding up great.

    Same load in a 20" Lilja barreled specialty pistol on a BAT action gives 2870fps.
     
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  5. LA50SHOOTER

    LA50SHOOTER Gold $$ Contributor

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    338 A.M. with Bertram Brass. Fed 215, 300 gr. Berger Hybrid OTM, 36" Lilja on a BAT 2.00 model "L" - Ran both H50BMG (142.0 gr) and RL-50 (146.0 gr.) - No problem getting 3350 fps. - Still need to do more testing on my end. - I'd stay away from the "Ball" Powder if at all possible due to the pressure spikes and pone to heat sensitivity.
     
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  6. calib

    calib

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    Ca48,
    I ran it last night on virgin brass with h50bmg and got a touch over 3250 with 300 otm, going to start playing with formed brass and see where we are at. Been trying to get barrel broke in and brass formed so we can really see what will happen.

    I have a jug of rl50, may try it depending on the h50bmg load.
     
  7. calib

    calib

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    Will stay away from ball if at all possible. Stocked up on h50bmg last night. Great numbers on your build. I ran up to 14q on h50bmg last night and 143 of 20n29 ti see how it might work
     
  8. LA50SHOOTER

    LA50SHOOTER Gold $$ Contributor

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    IF your going to try to run V/V 20N29 you should very much consider warming your loaded rounds to a temp. of 120-140 deg. F. for at least 24 hours minimum. - This will help stabilize the load from a velocity variation stand-point. - I've used 20N29 in the 50 cal. (BMG & BMG Imp.) for years and those who don't warm it find erratic velocity which equates to poor accuracy especially at longer range. - I warm any rounds I use V/V 20N29 in a Black & Decker Food Warmer / Cooler unit. (Google it) - A 50 round MTM tray for 20 gauge shotgun shells holds the CheyTac Cases well & a 12 gauge tray holds 416 Barrett & 50 BMG. - Once the loaded rounds have been warmed (36-48 hours) the stability and accuracy are there.

    - Ron -
     
  9. calib

    calib

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    Great advice, sounds like it would not work well with living in north idaho and hunting in low temps
     
  10. calib

    calib

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    Well, we got up over 3350 with fire formed brass. H50bmg @142 grains and with only now 50 rounds down the barrel. Thinking we may run it at 33 to 3325 with 140 grains as the 142 started to have heavier bolt lift
     
  11. Nick Caprinolo

    Nick Caprinolo Silver $$ Contributor

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    I wonder, are you loading for accuracy or velocity. Highest velocity does not usually result in best accuracy.
     
  12. calib

    calib

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    I sure didn't build an improved chey tac case to shoot lapua velocities.

    I want to see what this will do, in the mean time I am finding accuracy and nodes. This was re zeroing this weekend. 1 low, come up 2 at 12 o clock and 1 at 2:30 this was around 3250fps would like to get it at 3300 or better, but I know accuracy kills 20180804_111009.jpg
     
  13. calib

    calib

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    Will be running
    14.05
    141
    141.5 grains of 50 bmg this weekend. Will be probably the last time shooting groups at closer range. Will post results
     
  14. calib

    calib

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    Looking like the 3250 fps area is a very easily obtainable node for this gun. Ran 3 groups different charge st 300 yards, this one was the best. Will get zeroed and go longer. Screenshot_20180811-092158_Range Buddy.jpg
     
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  15. calib

    calib

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    Getting this or better at 100
     

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  16. calib

    calib

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    Screenshot_20180811-194811_Range Buddy.jpg
     
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  17. calib

    calib

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    Took this rifle out and took my 1st elk on a depredation hunt.


    Nick,
    I would say validated to just over 2k yards at 3300fps and putting 2 hits within 8"/.5moa of each other this was loaded for accuracy and velocity.

    Jerky, steaks, roasts and burger
     

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  18. calib

    calib

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  19. LA50SHOOTER

    LA50SHOOTER Gold $$ Contributor

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    I'd like to know what it will do in E2K type shooting ? - 5 shots on a paper target (MR1) for group and score. (10 minute time limit with a 6 minute sighter period just prior to record group).
     
  20. calib

    calib

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    Hmmm that could be fun.
    Just read the latest rules, I think dated 2/2018

    What is respectable for hunting class?

    Alex wheeler, can you say?
     
    Last edited: Sep 3, 2018

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