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Thread: H4831 in a 243?

  1. #1

    Default H4831 in a 243?

    In preparation for an upcoming prarie dog hunt I am loading some 243's.
    I have in my possesion a thousand Hornady 70 grain SPSX bullets and I also have more H4831sc than I'll probably ever use. I know that the H4831 is very slow burning and is not the perfect powder for a 70 grain 6mm bullet, in fact only a few loading manuals even list it for the 243 and then with only the heavy for caliber bullets. However in each of the 70 grain SPSX boxes is a little warning tag that says these little thin skinned bullets should not be driven over 3400 fps. Thats probably the very reason that they have sat on a shelf in the cupbaord for nearly 20 years untouched.

    It would seem to me that I could just fill the case full of H4831 and seat the bullets. I should say almost full as I have dealt with the hydraulic effect that extruded powder can have in pushing the bullet out on heavily compressed loads.

    It will be a good way to get rid of some components that are collecting dust and the prairie dogs probably won't know the difference. However before doing so I wanted some expert opinions on the matter.
    thanks EKC

  2. #2
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    Aug 2007
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    Eureka MT
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    Default

    I have a couple of manuals that show 4831 with the 70gr. My hodgdon book shows starting @ 44grs for 2937fps and max of 48grs for 3159fps @36600cup. M lyman book shows 43grs start for3142 and 49grs max for3552 @52000cup. The hodgdon book is for H4831 and the Lyman doesn't say which 4831 it is.

  3. #3
    Member
    Join Date
    Aug 2007
    Location
    Eureka MT
    Posts
    3,048

    Default

    I have a couple of manuals that show 4831 with the 70gr. My hodgdon book shows starting @ 44grs for 2937fps and max of 48grs for 3159fps @36600cup. M lyman book shows 43grs start for3142 and 49grs max for3552 @52000cup. The hodgdon book is for H4831 and the Lyman doesn't say which 4831 it is.

  4. #4

    Default Drop tube

    One way to make it easier to fill a small diameter case neck with a "coarse" powder is with a drop tube, which attaches to the bottom of a powder funnel so that you can let the powder slowly pour out of the scale pan. They are available from Midwayusa and could be in local shops. To just put the case up under the powder measure insetad in this case, no pun intended, is just asking for frustration and inconsistent loads.

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