185 TTSX in 338

Discussion in 'Reloading' started by Alaska, Nov 10, 2018.

  1. Alaska

    Alaska AH Senior Member

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    Anyone handload a 185 TTSX in the 338 Win and 338 RUM ?
    Trying to work up a handload thanks

    North Pole
     
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  2. Mekaniks

    Mekaniks GOLD SUPPORTER AH Elite

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    Yes sir, I also replied to the other thread, but I have had good luck with 185 tsx and ttsx over imr 4831 and mag primers.
     

  3. Alaska

    Alaska AH Senior Member

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    How many grains of IMR 4831?
    And this was in 338 Win
    I have been using 225 TTSX but I am going to give the 185 TTSX a go, thanks for any help.
     

  4. Mekaniks

    Mekaniks GOLD SUPPORTER AH Elite

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    73.5 is max in Barnes book. I used the same load with the TSX and the TTSX and they shot the POI in my rifle. I also set them about .035 off the lands, but Barnes recommends .050.
     
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  5. Alaska

    Alaska AH Senior Member

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    Thanks
    For the info
    I will let you know how they shoot
     
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  6. shootist~

    shootist~ AH Senior Member

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    I recently had good luck with the 185 grain TTSX using a medium charge of RL17. Rifle is a Sako AIV .338 WM that, after a bedding job, does about MOA (sometimes better) for 3 shots out to 385 Meters on steel.

    I had a good bit of RL17 left over after switching to a different powder for another caliber. Barnes also shows RL17 as their most accurate powder with the .338WM.
    I found an accuracy node from 68.0 to 68.5 grains and stopped there since I was only looking for 2,900 fps or so.

    The final load is 68.2 grains of RL17 in older Federal Nickle Plated brass using a standard Federal 210 primer. This brass may be heavier than most, btw. I have some new Nosler brass on order.
    COL is 50 thou off just touching the lands.

    When working up the load I was initially using the suggested Remington Magnum primer, but the F210 lowered the SD from 21.6 to 10.2 and increased the average velocity by 18 fps - to 2,908 fps. I'm using 2,920 in my ballistics program for the 68.2 grain loading.
    I think the barrel length is 22".

    Chrono is a MV3 Magneto Speed. I was loading 68.0 grains when chronographing in July, and switched to 68.2 last fall after re-bedding the rifle. It would previously shoot great with a warm barrel, but has always had the tendency to throw the first shot a little high.
    After glass bedding, I'm now getting POA=POI from a cold (dirty) barrel.

    RL17 can be temperature sensitive and I know this is true from some early 6.5 Creedmoor loads that were worked up in cool weather.
    I have not noticed anything pressure wise with the .338 WM loads, but I'm well below maximum book load.
     

  7. Alaska

    Alaska AH Senior Member

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    I running 71.5 of RL 17 with 185 TTSX in my 338 Win. This is probably the upper OCW. I normally use IMR 4350 @ 71.0 with 225gr Swift A frames with great results. But I thought I would give RL 17 and 185 TTSX a try for moose.
     
    Last edited: Jan 12, 2019

  8. shootist~

    shootist~ AH Senior Member

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    That load has to be moving along. Any chronograph data?

    Please post the results if/when you get your moose.
     

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