.375/338 Laupa Improved

Discussion in 'Long Range Hunting & Shooting' started by Rockfish Dave, Jun 14, 2014.

  1. Rockfish Dave

    Rockfish Dave Well-Known Member

    Messages:
    332
    Joined:
    Dec 21, 2008
    Just got everything back from Bartlein's in house smithing services. All I can say this build has been one PITA after another, but Bartlein is the one vender/shop that pulled through!

    Have yet to fire it, but if it shoots like the other rifles that have been chambered by them it will a hammer!

    A big thanks to Bartlein Barrels.

    Now if I can get some Fed 215M primers I'll be in business!

    (I just wanted to publicly thank them for for going above and beyond, to get this done right the first time!)
     
  2. Erik Kiser

    Erik Kiser Well-Known Member

    Messages:
    224
    Joined:
    Nov 8, 2005
    Tell us more about the build! What bullets you gonna start with. I just built a 338 Lap Imp, if there was a good Berger 375 bullet I would've went the direction you did
     

  3. Rockfish Dave

    Rockfish Dave Well-Known Member

    Messages:
    332
    Joined:
    Dec 21, 2008
    I bought the following to tryout:

    250gr Barnes TTSX
    Measured 3.665 COAL to lands

    320gr Cutting Edge MTH
    Measured 3.951 COAL to lands

    350gr SMK's
    Measured 3.885 COAL to lands

    350gr Woodleigh VLD
    Measured 4.030 COAL to lands

    Plan on using the Barnes 250gr for hunting and single feeding the others for target shooting steel. You can imagine my relief when the Barnes will mag feed in a CIP magazine with ease.

    The SMK's are the least expensive so I hope they shoot well. It will give me something to sling down range for fun.
     
  4. benchracer

    benchracer Well-Known Member

    Messages:
    1,366
    Joined:
    Dec 18, 2009
    This looks like a very interesting rifle build. Please do share the details of your build, along with your results, when you get down to burning some powder. I am really interested to see how your rifle performs. Cool project!
     
  5. cowboywhorses

    cowboywhorses Well-Known Member

    Messages:
    477
    Joined:
    Mar 14, 2010
    Pictures for us that are droolers.

    So they use the reamer from Pacific Tool and Gauge?

    Also this is the reamer you sent me for the build I would like to do so.

    Curious what was the barrel taper you did for this build?

    Thanks for the info Dave.

    Jeff
     
  6. Rockfish Dave

    Rockfish Dave Well-Known Member

    Messages:
    332
    Joined:
    Dec 21, 2008
    Build specs:

    Huber 2 stage trigger, 1lb each stage for a total pull of 2 pounds Best Aftermarket Rifle Triggers Reviews and Muzzle Brakes

    Defiance Deviant 338 Lapua Magnum action
    • Target tang
    • Standard bolt flutes
    • Seekins Bottom metal cutout (was hoping to score one, but none to be found)
    Bartlein Gain Twist barrels Bartlein Barrels, Inc. - Main Page

    • 1:11 ending in 1:9.7
    • Remington Heavy Varmint Contour
    • 8, 1/4" flutes
    Manners TF1 Folders « Manners Composite Stocks

    • Mini-chassis for CIP magazines
    • Molded in MUD camo
    • Atlas rail
    • non-rotating flush cups
    APA Fat Bastard Muzzle Brake

    • 3/4 x 24tpi
     
  7. Rockfish Dave

    Rockfish Dave Well-Known Member

    Messages:
    332
    Joined:
    Dec 21, 2008
    Jeff,

    I'm not sure if I gave you the final print. I went through so many iterations with each little but of information I received or gleaned from others. In the end it is pretty much the same as what Dave Kiff has on file for a 375/338 Lapua Improved with just a little less taper if I recall.

    *edit* Just went back in my sent history. Yes, I used the version for single feed, although as mentioned above the 250 gr TTSX should magazine feed just fine.
     
    Last edited: Jun 15, 2014
  8. Rich Coyle

    Rich Coyle Well-Known Member

    Messages:
    1,834
    Joined:
    Aug 14, 2013
    Rockfish Dave,

    Recently I was going though some records firing the Barnes .375 TTSX 250. I am not a benchrest shooter and the the groups certainly show this. But the groups also show the potential accuracy with a good shooter. The groups vary from 1/4" to 1".

    The best three shot group it ever fired was 1/16" with G.S.Custom 265 HV bullets. The first three measured 1/16" so I fired another round. The group grew to 5/16" and another produced 9/16". Using the 300 Sierras produced so may 3/8" groups I was no longer surprised when it happened.

    When I used Banres TSX 270 grain bullets the groups were more like 1" to 1 1/4". Certainly good enough for hunting but never impressed anyone with them.
     
  9. Rockfish Dave

    Rockfish Dave Well-Known Member

    Messages:
    332
    Joined:
    Dec 21, 2008

    Thanks for your input, that is why we test loads. Somethings work for some, and not others.
     
  10. Rockfish Dave

    Rockfish Dave Well-Known Member

    Messages:
    332
    Joined:
    Dec 21, 2008
    A few pictures:


    [​IMG]

    [​IMG]