Long Range Hunting Online Magazine

Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Reloading

Reloading Berger Bullets


338 norma mag

LinkBack Thread Tools Display Modes
Unread 05-27-2010, 09:00 AM
Bronze Member
Join Date: Sep 2008
Location: Spokane, Washington
Posts: 72
338 norma mag

Just curious what loads guys are using for this round. My gun is getting close to being completed and I thought I would collect a little load data. Let me know.

I should have pictures of my gun soon!
Reply With Quote
  •   #2  
    Unread 05-28-2010, 08:38 PM
    Platinum Member
    Join Date: Feb 2008
    Location: IOWA
    Posts: 2,119
    Re: 338 norma mag

    Details on components, and who is building it ?
    DYODD, but I would try Retumbo in the 93gr range for the 300 SMK's.
    Another good powder would be Vit N570
    Reply With Quote

    Unread 05-29-2010, 09:52 AM
    Bronze Member
    Join Date: Oct 2007
    Posts: 67
    Re: 338 norma mag

    Both Ward Brien and Jim Sloan (the designer of the cartridge) suggest using Ramshot Magnum. 91.0 - 93.5 range with 300 SMK
    That's where I will be starting as soon as I get all my parts together. Along with Retumbo and maybe H1000
    Reply With Quote
    Unread 05-31-2010, 10:31 PM
    Bronze Member
    Join Date: Sep 2008
    Location: Spokane, Washington
    Posts: 72
    Re: 338 norma mag

    My rifle is being built by Al Ewing. He is a local gunsmith and has held many records for shooting.

    700 action, spiral fluted bolt
    Jewell Trigger
    Bartlien Barrel, Sendero contour, 1-10 twist
    custom muzzle break - Al Designed the muzzle break.
    H-S precision stock
    Defensive edge check piece
    Tubbs recoil lug

    Nightforce 5.5-22 x 56mm
    Badger ordiance rings
    EGW 20 moa base

    I also have a manners stock but it is a little heavy. He has built other guns for me in the past and they shoot exceptionally well. He is also building a 338 norma at the same time so it will be nice to do load development with him.

    Thanks for the replies. I am very interested in the Ram Shot powder as I have never used this powder before. I have used the others and I will be trying the retumbo for sure. I also have a lot of h-1000 as that is what my 264 Win mag likes. Thanks again

    Last edited by walter351; 05-31-2010 at 10:35 PM.
    Reply With Quote
    Unread 06-01-2010, 01:21 AM
    Gold Member
    Join Date: Apr 2007
    Location: ALASKA
    Posts: 504
    Re: 338 norma mag

    In the middle of load development...but have loaded several strings of H1000, Retumbo, and RSM at incremental charge weights.

    H1000 is a touch quick (pressure before case capacity and velocity potential is reached)....

    RSM is just about right on load density/pressure....

    Retumbo will require you to use compressed loads to obtain the velocity of RSM...

    Velocity wise, given equal pressures....H1000-slowest, Retumbo-next fastest, RSM-best velocities.

    This is out of 27" barrel; longer barrel might do better by Retumbo, but for now it looks like RSM has the most promise. From what I can see, if you just had to use H1000, it looks like you might need to run 35-50 fps slower than what RSM or Retumbo could get you.

    Looks like accuracy/pressure is going to come in around 2750 to 2800 fps for this 27" 10 twist Lilja.

    I'll be interested to hear of anyone's results of temperature testing with RSM.

    V570 looks like it would be interesting to try in this chambering.
    Reply With Quote
    Unread 07-02-2010, 10:20 PM
    Silver Member
    Join Date: Jul 2007
    Location: Maryland
    Posts: 479
    Re: 338 norma mag

    RSM and R-22 are the two Sloan advised that will reach top FPS before pressure. I couldn't find any RSM yet so I've been shooting R-22 with great accuracy.
    "Fast is fine accurate is final"
    Reply With Quote


    Thread Tools
    Display Modes

    Similar Threads for: 338 norma mag
    Thread Thread Starter Forum Replies Last Post
    338 norma Rimfire Deer Hunting 4 09-13-2010 06:47 PM
    338 norma Mag dirtboy Long Range Hunting & Shooting 7 09-06-2010 10:11 PM
    338 norma mag walter351 Reloading 5 05-27-2010 11:22 PM
    .358 Norma Mag HuntnID The Basics, Starting Out 6 12-11-2008 12:23 PM
    6.5-284 Win vs Norma Bullseye The Basics, Starting Out 1 04-04-2005 04:46 PM

    All times are GMT -5. The time now is 02:25 PM.

    Powered by vBulletin ©2000 - 2017, Jelsoft Enterprises Ltd.
    Content Management Powered by vBadvanced CMPS
    All content ©2010-2015 Long Range Hunting, LLC