25-284 Win

Discussion in 'Reloading' started by Doc M, Jul 25, 2012.

  1. Doc M

    Doc M Member

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    Jul 25, 2012
    Does anyone have any data on this chamber. i have been using data for the 25-06 as to the similar case capacity with caution in mind.

    Thanks for the input

    Doc

    gun)
     
  2. barnesuser28

    barnesuser28 Well-Known Member

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    Mar 2, 2012
    Hodgdon has data for it on their website.

    I copied and pasted this from their website

    75 GR. HDY HP Hodgdon H4831 .257" 2.795" 53.5 3330 58.0 3604
    75 GR. HDY HP Hodgdon H4350 .257" 2.795" 48.0 3429 52.0 3640
    75 GR. HDY HP Hodgdon H414 .257" 2.795" 48.0 3464 52.0 3632
    75 GR. HDY HP Hodgdon H380 .257" 2.795" 46.0 3438 50.0 3538
    87 GR. SIE SP Hodgdon H4831 .257" 2.795" 52.5 3347 57.0 3544
    87 GR. SIE SP Hodgdon H4350 .257" 2.795" 46.0 3180 50.0 3400
    87 GR. SIE SP Hodgdon H414 .257" 2.795" 45.0 3163 49.0 3352
    87 GR. SIE SP Hodgdon H380 .257" 2.795" 44.0 3082 48.0 3335
    100 GR. SPR SP Hodgdon H4831 .257" 2.795" 49.5 3068 54.0 3369
    100 GR. SPR SP Hodgdon H4350 .257" 2.795" 43.0 2860 48.0 3129
    100 GR. SPR SP Hodgdon H414 .257" 2.795" 40.5 2971 44.0 3120
    117 GR. HDY BTSP Hodgdon H4831 .257" 2.775" 48.0 2882 52.0 3025
    120 GR. NOS PART Hodgdon H4831 .257" 2.795" 45.0 2871 49.0 2978
    120 GR. NOS PART Hodgdon H4350 .257" 2.795" 41.0 2642 44.0 2916
     

  3. 358sta

    358sta Well-Known Member

    Messages:
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    Aug 21, 2006
    My father just had one finished last year as a switch barrel with a 6.5x284 as his other barrel. Not sure what bullet weight you want to use but I did the work up for my father's rifle with Sierra's 120 gr. HPBT GameKing bullet. I did some very limited testing with Nosler's 110 gr. Accubond since it wasn't shooting very well out of a 257 Rob AI. Here is what I have for both bullets:

    110 gr. Nosler Accubond
    56 gr. N-170, Fed. 210, necked down Lapua 6.5x284 brass
    3199 fps 4-shot avg., 0.498" 3-shot group @ 100 yards

    52 gr. H-4831SC, Fed. 210, necked down Lapua 6.5x284 brass
    3176 fps 4-shot avg., 0.392" 3-shot group @ 100 yards


    120 gr. Sierra HPBT GameKing
    49 gr. H-4831SC, Fed. 210, necked down Lapua 6.5x284 brass
    3001 fps 4-shot avg., 0.352" & 0.453" 3-shot groups @ 100 yards

    I had really good luck with H-4831SC in both the 25x284 and 6.5x284 barrels. Let me know if you want any more details regarding these loads. As always, reduce these loads accordingly as your rifle and components will likely be different. Almost forgot to add that the barrel is 26.5" long.

    Kevin
     
    Last edited: Jul 26, 2012
  4. Trickymissfit

    Trickymissfit Well-Known Member

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    Jun 11, 2010
    Hogdon's have it listed in their #26 manual, so I'd think you should be able to download it off their website
    gary
     
  5. Doc M

    Doc M Member

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    Jul 25, 2012
    Thanks for the information!

    Doc

    gun)
     
  6. mike33

    mike33 Well-Known Member

    Messages:
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    Dec 19, 2008
    If you still are looking i own 2 25x284's except the second one is unfired. I bought it used about 5 years ago from a friend who had it built from Ultra lite arms 5 3/4 lb. gun. He already had the data but i shoot the sieera 100 grain spitzer fb with 58 grains of Imr 4831. Yes it is close to being hot but i get close to 3500 fps with it. Very good chambering its close to a 257 whby but with a short action. If you try other bullets such as the 100 nosler bt back off from this load more bearing surface you will get pressure.
    Mike