338 rum loads?

Discussion in 'Reloading' started by jax338, Aug 7, 2006.

  1. jax338

    jax338 Active Member

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    I know this have been posted on here before but I have some 250gr matchkings and 225gr accubonds and was wondering what were some of the loads you guys shoot and the velocity of these loads also. My gun is a factory 700 lss. Thanks in advance guys.
     
  2. royinidaho

    royinidaho Writers Guild

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    Jax338,

    I just got my 338 RUM back last friday evening. Its a factory 700 BDL w/a factory take off 26" cm barrel. I just completed a Tubbs Final Finish abreviated process as a personal "lets see what this does" quest.

    As soon as I get the scope remounted I'll be in your same shape but I have an Idea of where I want to end up

    I'll try to keep things posted here.

    Initial impressions though are that the Holland QD brake is still a sweet thing. A 250gr bullet pooping along at 2500 is pretty much like a 22-250 or less.
     

  3. davewilson

    davewilson Well-Known Member

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    Roy, 2500 seems a little slow for a 250 gr bullet.
     
  4. Idaho_Elk_Huntr

    Idaho_Elk_Huntr Well-Known Member

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    Im having good luck with the 225 Accubond and 96.1 grains of RL 25. Group .75 at 200 yards from a 700 LSS in a HS Precision stock.
     
  5. royinidaho

    royinidaho Writers Guild

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    I was cautioned to go slow w/the abrasive bullets. 2400 fps was a 400 over the predicted for the load, which was a good sign, I hope.

    The 338 Win bbl was shooting @ 2800 and as much as 2930 w/the 250 bullet. I should be able to do at least that with less wear and tear on the casses.....
     
  6. sambo3006

    sambo3006 Well-Known Member

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    I have had very good luck with the 225 AB and IMR 7828 out of my 700 338RUM. I am using moly coated bullets. I started at 90 grains and worked my way up. I believe I stopped at 93 grains, but don't quote me on that. I got 3050 fps at the top end before I got pressure signs. Keep in mind this is with a 26" barrel that has been ported, so I probably lost a little velocity.
    I got pressure signs at lower velocity with both H1000 and Retumbo and powder charges were compressed with Retumbo. The IMR 7828 fills the case nicely.
    I have been getting 1/2" groups with the 225AB. I think you will like it.
    Best of luck, Sam
     
  7. royinidaho

    royinidaho Writers Guild

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    Here's this afternoon's results. chrono'd only no groups.

    338 RUM 26" chrome moly Remington sporter barrel.
    FED-215 primers
    All cases had flash tube installed.
    Extra long seating - out to touching the rifling.

    96gr Ramshot Magnum - Hornady 225 gr SP Interlock - 2822 FPS /ubbthreads/images/graemlins/frown.gif
    89gr RL-22 Hornady 225 gr SP Interlock - 3068 FPS /ubbthreads/images/graemlins/smile.gif
    92gr IMR-7828 Hornady 225 gr SP Interlock - 3094FPS /ubbthreads/images/graemlins/smile.gif
    87gr IMR-7828 - 250 SMK - 2877
    88gr IMR-7828 - 250 SMK - 2891

    The RL-22 load 'may' have been a little stiff on bolt opening all other cases extracted with no effort. No cases indicated excessive pressures in any way.

    Initial observation/comparison w/Win Mag is that with these same velocities case extraction was always hard.
     
  8. Nathanial

    Nathanial Active Member

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    96 grains of RL25 and 225 AB's
     
  9. royinidaho

    royinidaho Writers Guild

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    Nathanial,

    What kind of velocity does that load produce in your rifle?

    I'm having a personal hard time justifying anything less than 250 grains in the 338 RUM. It just seems that's the way it ought to be........ However, I'll shoot whatever shoots best.