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Thread: whats the difererence

  1. #1

    whats the difererence

    can anyone tell me the difference between hodgson imr 4831 and h 4831 .

  2. #2
    Different manufacturers & different burn rates. - Not exactly the same so use the specific manufacturers' data.

    Ian

  3. #3
    thanks ian have you ever used h 4831 to load 308

  4. #4
    Quote Originally Posted by toad View Post
    can anyone tell me the difference between hodgson imr 4831 and h 4831 .
    if you use the imr 4831 start load development 1gn under the hogdons data this will keep you safe.

  5. #5
    Quote Originally Posted by toad View Post
    thanks ian have you ever used h 4831 to load 308
    I have, with 180 grain and heavier bullets. Very accurate but not the optimal powder.~Muir

  6. #6
    cheers lads ,looking at the load data they seem very similar. a friend was very kind to give me tub just struggling to get over the fact that I cant get any varget.

  7. #7
    4831 is a bit too slow for 308. Works for the heaviest bullets (just). Better use a mid speed powder - Varget, Reloder 15, Viht N140, TR140, etc for mid range bullets (140 -168 grains).

    Ian

    p.s. 4831 is good for 243 Win with 90 - 100grain bullets.
    Last edited by Yorric; 11-05-2014 at 19:11.

  8. #8
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    [QUOTE]Different manufacturers & different burn rates. - Not exactly the same so use the specific manufacturers' data.[/QUOTE]

    Yes. They are in fact two different powders entirely. Data for them is NOT interchangeable. The original Hodgdon 4831 was, apparently, war surplus 20mm Cannon propellant. One is faster than the other.

    It is worth saying also that H4831 (the original "long grain") is also NOT the same powder as the newer H4831SC (the short grain). That is that H4831SC is not grains of H4831 cut in half or extruded into shorter lengths.

    So they can be loaded H4831 and H4831SC to the same weight setting on scales but not to the same volume setting on a powder throwers or Lee's Popeye's pipes. They are different!
    Last edited by enfieldspares; 12-05-2014 at 07:45.

  9. #9
    Very informative thankyou

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