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question in 224 dia 75 gr hpbts

Discussion in 'Handloading and Reloading' started by Frankl03, May 17, 2010.

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  1. Frankl03

    Frankl03 Member

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    I would like to load some 75 gr hpbts with Win 748. Does 22 grains sound like an OK starting load? I've seen 21 -1/2 for Varget and H335. Its for an AR with a 1/7 twist. I believe that the 748 is a little faster than h335.

    Thanks!
     
  2. ForneyRider

    ForneyRider Member

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    I'd work from min to max in .3gr increments using Hodgdon data. Stop when pressure signs appear.

    www.hodgdon.com

    I've used Varget, R-15, AA2230 with the 75gr HPBT. W748 should be excellent as well.

    This bullet shoots quite well in my 1:9 twist AR at magazine length (2.26in COL).
     
  3. Frankl03

    Frankl03 Member

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    The only problem is that they don't show data for Win 748 and that sized bullet.

    thanks!
     
  4. jim147

    jim147 Member

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    I have to guess that an AR with 1 in 7 twist is going to be .223 Rem/5.56 X 45.

    A good place to check if you can't find load data on the Hodgdon website is to call. 913-362-9455. It's even local for you.

    My old book shows 20-24 grains of Win 748 for a 75 grain HPBT in 5.56 X 45 NATO.

    jim
     
  5. kutter

    kutter Member

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    Lyman's 49th says that for a 77gr jacketed HPBT starting load is 22.6, someone on here I am sure knows better than I but I have been taught that you can use a load for a heavier bullet but not the inverse. Within reason of course.
     
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