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powder for Rem 7mm mag ?????

Discussion in 'Handloading and Reloading' started by buzz1965, Apr 15, 2007.

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  1. buzz1965

    buzz1965 Member

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    I have a BAR in 7mm mag and was wondering if H4831sc would have the correct burn rate? I use it in several of my other rifles that are bolt guns. I have been told the burn rate is very important when reloading for autos. I plan to shoot 160 grainers. i hope someone out there can provide a little help.
     
  2. Grumulkin

    Grumulkin Member

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    The slowest powders I would use are H4895 and Varget. My rationale is that the Hornady manual lists those powders as suitable in the M1 Garand. I know H414 is too slow for the Garand and H4831SC is slower yet.

    It is possible that a BAR is more tolerant of slow powders than the Garand but I don't know that for sure.
     
  3. dakotasin

    dakotasin Member

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    best powders for the 7 rem mag that i have found are h-4831, and rl-22. be careful of varget in the 7 rem mag - that is a massive case and a pretty fast powder.
     
  4. CZ57

    CZ57 member

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    Also two of the most recommended, when you consider that RL-22 is made by Norma for Alliant and is very close or identical to Norma MRP. 4831 will build max pressure with 160 grain bullets.;)
     
  5. Dark Helmet

    Dark Helmet Member

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    don't forget IMR 7828
     
  6. bigcim

    bigcim Member

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    imr 4350
     
  7. CZ57

    CZ57 member

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    buzz: why not load up a few testers with the 4831 SC? Single feed the first few and if they function, try 3 in the mag. If they don't work, bigcim gave you one that will.;)
     
  8. buzz1965

    buzz1965 Member

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    I just had a chance to check the replies to my question. I greatly thank you all for the answers I received. The reason I was wanting to go with 160 grnrs is that I sighted in with 160's. The funny thing is the Browning doesn't like Winchester failsafe, but loves Federal classic 160's. I think it may have something to do with the moly coating. again thank you all:)
     
  9. LeonCarr

    LeonCarr Member

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    RL-22

    Just my .02,
    LeonCarr
     
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