6xc loads

Discussion in '6PPC, 6-6.5x47, 6XC, 6 Rem, 243' started by J.d. Popkes, Apr 10, 2019.

  1. J.d. Popkes

    J.d. Popkes Silver $$ Contributor

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    Curious, where are people hitting pressure with 105 class bullets in the xc? Peterson srp brass, 450 primer, 140ish freebore. Just wanted an idea of where to WORK UP TO, hoping to save some time. Powders are

    4831sc
    H4350
    RL16 &17

    Any advice or experience on a certain powder being easier on throats would be welcome as well. I want a little over 3000 FPS but don’t absolutely need a hot rod at the expense of components.

    I realize it’s probably been covered before but.........
     
  2. rip223

    rip223

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    105 Berger Hybrid, I started at 38.5 grains of H4350 and worked my way up.
     
  3. J.d. Popkes

    J.d. Popkes Silver $$ Contributor

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    I see, thanks for the reply, was curious about where ya hit pressure though
     
  4. jr600yd

    jr600yd Gold $$ Contributor

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    107 SMK’s molly
    Lapua 22/250 brass fireformed
    Fed 210 LR primer
    40 grs AA-4350
     
  5. rip223

    rip223

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    Rem 700, CBI RemAge 24" 8 twist with SAS suppressor. 300 rounds shot 95 gr moly TMK Sierra.

    105 hybrid Berger moly, H4350. Started at 38.5, went up 0.5 grains per shot, mid 60's, 700 ft. above sea level, 50 % humidity. Each shot I picked up 40 to 50 fps. 41.5 I picked up a small shiny ejector mark, easy bolt lift. 42.0 still gain another 40 plus fps, easy bolt lift, shiny ejector mark. Was going to back down to 41.5 but had picked up that much speed I decided to load a 3 shot string at 42.0 since not much difference with brass.
    1st shot 3227
    2nd shot 3226
    3rd shot 3224

    That's my load and I am sticking to it !
    Accuracy is great, all shots were clover leafed on paper at a 100yds. Next day started @ 400 and went to 800 yds to confirm ballistic chart. I would take 2 shots at 8 in. target and would go down to check. So barrel was always cool. I was very happy with accuracy.
    Next morning I banged a 8 in. plate @ 700 yds. cold bore shot.
    It seems to me the 6XC likes near max loads.
     
  6. rip223

    rip223

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    Norma 6XC brass, CCI BR2 primers.
     
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  7. oldduc

    oldduc Silver $$ Contributor

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    If it works like mine with that powder, at those velocities, you won't stick with it for more than about about 700-800 rounds. My throat was disappearing after about 200 rounds.
     
  8. eric32

    eric32 Shooting when I can Gold $$ Contributor

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    So anyone have load data for a 16" long barrel, i wanna try a faster powder for the 105gr RDF. Main use will be for a suppressed barrel so no need to worried about how load it is.
     
  9. J.d. Popkes

    J.d. Popkes Silver $$ Contributor

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    THANK YOU!! now this is useful. So 4350 is a little hard on throats huh. I’m wanting 4831sc to be the one.
     
  10. jr600yd

    jr600yd Gold $$ Contributor

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    Try AA-4350 it’s a little faster than 4831sc and a little slower than 4350. I’ve had excellent results with it.
     
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  11. urbanrifleman

    urbanrifleman Gold $$ Contributor

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    I really think the R23 is going to be one of the best 6XC powders that no one has tried.
     
  12. J.d. Popkes

    J.d. Popkes Silver $$ Contributor

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    Interested in that one too. No real data out there but I guess I never directed my search to RL23 only.
     
  13. urbanrifleman

    urbanrifleman Gold $$ Contributor

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    We are testing it in 243 and it is very, very impressive. Super low SDs, tiny groups and super wide nodes
     
  14. spclark

    spclark Gold $$ Contributor

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    I've heard that before, wondering if it holds up in a case with significantly smaller volume?

    If 243WIN works well with ~ 42 - 45 grains (depending on which 100-105 grain bullet you're using) will it work as well when there's room enough for just 37 - 41 grains behind the same bullets? Of course barrel length plays a part too, so there's some room for filling in the unknowns here...

    (That link'll take you to Alliant's data page for RL23 recipes. Note that all the cartridges shown there are significantly larger in case volume than the 6XC.)
     

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