45/70: Need Load Data for 300 TTX FN
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Thread: 45/70: Need Load Data for 300 TTX FN



  1. #1
    Wrangler
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    45/70: Need Load Data for 300 TTX FN

    I can't seem to find any load data for:
    300 TTX FN and H-4198
    Team 38-55 Captian
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    Failure is not an Option

  2. #2
    Gunfighter
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    Buy a Barnes Manual, or call them and see what they recommend.
    Team 45-70 #1790

    Team 1894 #554

  3. #3
    Wrangler
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    Quote Originally Posted by KYMountainman View Post
    Buy a Barnes Manual, or call them and see what they recommend.
    Checked their web for this combo, nothing.
    Looks like I will have to call Barnes
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  5. #4
    Wrangler
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    Looks like I'll have to wing it, Barnes is closed until next week.
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  6. #5
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    I don’t have the book in front of me, but Barne’s TSX bullets are FT(flat tip) for .45/70 & 450M; ones for .458WM are FB(flat base). Which one is it that you have?

  7. #6
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    Quote Originally Posted by Sevastopol View Post
    I don’t have the book in front of me, but Barne’s TSX bullets are FT(flat tip) for .45/70 & 450M; ones for .458WM are FB(flat base). Which one is it that you have?
    TSX FN, Barnes #30630
    Checked the Barne's book, No data for H-4198
    Team 38-55 Captian
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  8. #7
    Wrangler
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    I read somewhere that the Barnes #3 has 4198 listed.
    Anyone have that manual?
    Team 38-55 Captian
    Team 45/70 Member #1931
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  9. #8
    Wrangler
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    Barnes #4 lists 45-49 grs. of H4198 for 450 Marlin with Hornady case (2.090") & Federal GM210M primer. The experts can opine if this can be used for the .45-70.

  10. #9
    Sidewinder
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    I load those Barnes with 48gr of H4198 and a WLRM primer.
    Maineiac and Hylander like this.

  11. #10
    Sidewinder
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    Cartridge : .45-70 Govt. SAAMI
    Bullet : .458, 300, Barnes 'TSX' FN 45843
    Useable Case Capaci: 51.948 grain H2O = 3.373 cm³
    Cartridge O.A.L. L6: 2.550 inch = 64.77 mm
    Barrel Length : 22.0 inch = 558.8 mm
    Powder : Hodgdon H4198


    Predicted data by increasing and decreasing the given charge,
    incremented in steps of 2,0% of nominal charge.
    CAUTION: Figures exceed maximum and minimum recommended loads !


    Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
    % % Grains fps ft.lbs psi psi % ms


    -20,0 77 34,57 1619 1745 21543 2387 77,1 1,636
    -18,0 79 35,43 1655 1824 22719 2469 78,2 1,599
    -16,0 81 36,30 1691 1906 23962 2551 79,4 1,564
    -14,0 83 37,16 1728 1989 25272 2632 80,5 1,529
    -12,0 85 38,03 1764 2074 26657 2712 81,6 1,496
    -10,0 86 38,89 1801 2161 28120 2792 82,6 1,463
    -08,0 88 39,75 1838 2250 29666 2871 83,7 1,431
    -06,0 90 40,62 1874 2340 31301 2949 84,7 1,401
    -04,0 92 41,48 1911 2433 33031 3026 85,7 1,371
    -02,0 94 42,35 1948 2528 34861 3101 86,6 1,342
    +00,0 96 43,21 1985 2624 36799 3175 87,5 1,313 ! Near Maximum !
    +02,0 98 44,07 2022 2722 38851 3247 88,5 1,286 ! Near Maximum !
    +04,0 100 44,94 2058 2823 41019 3318 89,3 1,259 ! Near Maximum !
    +06,0 102 45,80 2095 2925 43338 3386 90,2 1,232 !DANGEROUS LOAD-DO NOT USE!
    +08,0 104 46,67 2132 3028 45790 3453 91,0 1,207 !DANGEROUS LOAD-DO NOT USE!
    +10,0 106 47,53 2169 3134 48396 3517 91,8 1,179 !DANGEROUS LOAD-DO NOT USE!


    Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
    Data for burning rate increased by 10% relative to nominal value:
    +Ba 96 43,21 2092 2915 42890 3314 93,8 1,236 !DANGEROUS LOAD-DO NOT USE!
    Data for burning rate decreased by 10% relative to nominal value:
    -Ba 96 43,21 1858 2300 31040 2936 79,2 1,424


    42000 PSI used, as new Marlin after 1972
    Team 45-70 #1181


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