What powder for 105 gr bullets in 243 win?

Discussion in 'Long Range Hunting & Shooting' started by YOTE, Jun 4, 2011.

  1. YOTE

    YOTE Member

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    My Savage 12 LRP DBM 243 win has a 26 inch barrel and a 9.25 twist so it should stabalize the 105 berger or amax. I know that 4350 or 4831 have been good powders for the 243. But what about the heavier bullets. Is H1000 or even Retumbo worth a shot. What powder do you guys like for the heavier bullets? Also do you guys have any seating depth advice? I will be using Lapua brass and I'm leaning towards cci br2 primers to try out first. Thanks for the help.

    Yote gun)
     
    Last edited: Jun 4, 2011
  2. liltank

    liltank Well-Known Member

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    IMR/H4350, IMR/H4831/sc, will all be slow enough for the heavier bullets. If you want to stoke them up, then try some RL17. You have to be careful with the RL17. It is very temp sensitive. I just checked on reloadersnest.com and found that RL22 and 25 seem to produce some pretty good speeds. I wouldn't go much slower then H1000. You'll run out of capacity before you find pressure problems.

    Tank
     

  3. roninflag

    roninflag Well-Known Member

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    i can not find it now. BTW uses H-1000 for 3050 out of an 8 twist krieger. i would try 210m and 215gm and h-1000. let us know what you get.
     
  4. longrangeshooter1

    longrangeshooter1 Well-Known Member

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    I had good luck with Rel 25 with the 105 gr. Amax.
     
  5. BlackSS

    BlackSS Well-Known Member

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    I got excellent velocity but poor accuracy with RL-22 with 95 gr pills. I get decent accuracy but only moderate velocity with RL-19. I will likely try some IMR 4350 soon to see if I can find a powder that gives me both.
     
  6. joseph

    joseph Well-Known Member

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    Has anyone tried Varget?

    joseph
     
  7. brentc

    brentc Well-Known Member

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    I've never had problems with RL17 and temp sensitivity and I use it extensively in many calibers. In fact, it really shines in the 243 with the heavier bullets. My hunting load is a 95 grain SST on top of 42.0 grains of RL17. There should be no issue running 100's and 105's.
     
  8. midwesthunter

    midwesthunter Well-Known Member

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    You might have trouble stabilizing them 105's with a 9.25 twist. My Rem with a 9 twist wont do it. but loves 95 grainers
     
  9. CHARLIEDUECE65

    CHARLIEDUECE65 Well-Known Member

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    Try 46 to 48 grains of H1000. I'm using Winchester brass/BR2 primers. Barrel is a 25", 8 twist, shooting the 105 Berger jumped .040.
     
    Last edited: Jun 16, 2011
  10. YOTE

    YOTE Member

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    Thanks for the help fellas. I started with h4831sc, 105 bergers, lapua brass, cci br2 primers. I started with 39 grains and went in half grain increments up to 43 shooting 5 shot groups none measured over 3/4 of an inch with a couple groups being about 1/4 inch. 43 grains is lookin good. I can shoot one hole and im right at 3000 fps. Now the question is do I keep going? I havent seen pressure signs that i can recognize even tho this load is over max. I would like more velocity but 3000 was the initial goal. I'm there should i just go have some fun with it now? Also i will probably work up a similar load to shoot 105 amax's as well. anyone else shot amax's and bergers using the same load? I will obviously start low with the amax load and see if i can run it that hot, just wondering how they compare

    Thanks again you guys helped out alot!!
     
  11. budlight

    budlight Well-Known Member

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    My Rem is a 26 inch 9 1/4 twist. 243's with short barrels might get away with fast powders like r-17. I couldn't even use R-17 to get high speed with 70 grainers.

    I choose 100 boat tails and just concentrated on them. .430 BC which is better than the flat based 105's The two Hodgdon superperformance powders h-100V and Superperformance can exceed 3200 fps. Ramshot Hunter is nice fine ball powder also exceeding 3200 fps. I also tried r-22 and imr 7828 ssc. But they seemed to have larger fps spread for the chrono testing.

    Ramshot Hunter toned back down to 3200 is what I took my Antelope with this year. Dead on the spot.

    check out my post. Just click on this below

    http://www.longrangehunting.com/forums/f85/opening-day-nevada-antelope-76887/