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Special Bullet load data (XPBs, etc.)

Discussion in '10mm Reloading Forum' started by MakeMineA10mm, Sep 5, 2008.


  1. gofastman

    gofastman
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    has anybody, other than Buffalo Bore, been able to safely move a 155grTAC-XP in the 1400fps range?
     

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  2. preventec47

    preventec47
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    Unless someone has verified Buffalo Bore's claims, I only
    see them as "claims" and not fact. And whoever verifies
    it cannot ask BB for free ammo for testing. They have
    to be anonymous buyers.
     

  3. Taterhead

    Taterhead
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    Counting Beans

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    I have not personally tested the Barnes load. I have tested the 180 gr. They claim 1311 fps from a G20. I averaged 1335 fps (IIRC, it was summer temps). Others have reported chrony results that are consistent with BB claims too. I have no reason to doubt their claims.
     
  4. gofastman

    gofastman
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    Now I wonder if that is too fast, check out this fragmentation @1200fps:
    http://www.brassfetcher.com/index_files/400CorBon.htm
    (same bullet, different cartridge)
    However Cor-Bon pushes the 155's to 1200, and they seem like the kinda folks that may know what they are doing :dunno:
     
    #24 gofastman, Apr 9, 2012
    Last edited: Apr 9, 2012
  5. _The_Shadow

    _The_Shadow
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    Ret. Fireman

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    Did you see the bullet fragments?
    [​IMG]
    This is what I was mentioning about over driving the HP type bullets, they open to their max expansion dia. then start to roll back on itself to a smaller dia. even shedding fragments, till it comes to rest.

    So in therory, is it better to reach total expansion rather than over driving the projectile to the point it rolls back and/or sheds its petals?

    This is the Barnes 140 grain at velocity as written by the picture...
    [​IMG]
     
  6. gofastman

    gofastman
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    #26 gofastman, Apr 12, 2012
    Last edited: Apr 12, 2012
  7. littlejohn3rd

    littlejohn3rd
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    I have been a member for some time, however have not done testing for a long time. I am finally getting to do some.

    I tried out some Vihta Vuori 3N38 with Barnes 125 gr and also Magtech's 130 gr CHP, and C.O.P. 140gr CHP's, and got some great results.

    11.5 gr 3N38
    140gr C.O.P.
    col 1.250
    Fed LP primers, Rem brass
    6 inch L.W. barrel
    1395 fps avg, es 15.
    primers showing very slight flattening, but very little case expansion.

    12.0 gr 3N38
    125/130 gr Barnes/Magtech
    col 1.250
    Fed LP primers, Rem brass
    6 inch L.W. barrel
    1535 fps avg, es 12.
    same as above, primers show very slight flattening, normal case expansion compared to Winchester 175gr Silvertip.

    Definitely not 'full' power, would have been 100-110 fps less with a 4.6 barrel, but still decent.
     
    #27 littlejohn3rd, Sep 24, 2013
    Last edited: Sep 24, 2013
  8. sitka_rn

    sitka_rn
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    Anyone have starting load data for 10mm Barnes 155 GN TAC-XP FB? Have some new starline brass. CFR -Pistol, Lots of BlueDot... Some 700x and 800x on hand. Really interested in C.O.L. if anyone has experience and personal chrono data... not just B.B. published data. Thanks from Sitka,AK
     
  9. _The_Shadow

    _The_Shadow
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    sitka_rn likes this.
  10. sitka_rn

    sitka_rn
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    Thanks Shadow... Have the right barrel... heavier spring and firing pin... That C.O.L. really helps. Want to try some blue dot...