30-378 WBY and H50BMG Powder

Discussion in 'Reloading' started by JL523, Oct 12, 2009.

  1. JL523

    JL523 Member

    Messages:
    16
    Joined:
    Jul 14, 2009
    Anyone using this combination? I have been testing some RL22, and getting ready to test some H1000. However, I was recently in a store and saw a can of this and decided to grab it. I am using Barnes TTSX in 180 gr. I loaded some of these last night, and I didn't really like the amount of compression needed to get the bullet seated properly. I am shooting a C.O.A.L of 3.610" (approx.....I measure to the ogive).

    I am thinking about just pulling the bullets and trading the powder to one of my buddies.

    Any opinions/suggestions?
     
  2. Laker_Taker

    Laker_Taker Well-Known Member

    Messages:
    56
    Joined:
    Nov 10, 2005
    JL,
    I have found 2 powders that work well in my 30-378. The first is H4831SC and 180 grain partition is extremely accurate. If you like a bigger pill try Retumbo and a 200 accubond mine shoots this combo around .5. I did try H50BMG but I could not get anything under 1 inch still not bad but I wanted better. When I did try H50BMG I was just starting out handloading and did not really know at the time how to work up a load. I still have a couple of pounds left but with retumbo and H4832SC being really accurate and extreme powder I see no need.

    Hope this helps.
    Laker
     

  3. J E Custom

    J E Custom Well-Known Member

    Messages:
    7,313
    Joined:
    Jul 29, 2004
    H 869 and H 50BMG are the powders that I like with the 200+grain bullets.

    I have had very good luck with both and accuracy is outstanding. The most accurate load
    in my 30/378 is 118 grains of H 50BMG behind a 200gr Partition (5 shots @ 100yards less
    than 1/10Th of an inch .093 ).

    My fastest and still accurate is 122 gr H50BMG with the 200 gr accubond. But be careful
    this is a max load so work up.

    I don't shoot 180gr bullets in the 30/378 because I have a 300 RUM that does the 180s
    well and with the case capacity of the 378 case you can really move the bigger bullets.

    J E CUSTOM
     
  4. Laker_Taker

    Laker_Taker Well-Known Member

    Messages:
    56
    Joined:
    Nov 10, 2005
    J E Custom,
    Are you using a custom barrel? Thats pretty impressive. I'm at .5 with a stock barrel? Also how does H50BMG perform in the cold?

    Just curious?

    Thx Laker
     
  5. J E Custom

    J E Custom Well-Known Member

    Messages:
    7,313
    Joined:
    Jul 29, 2004
    Yes : the barrel in the 30/378 is a 27.3" #7 taper Shilen select match 1 in 10 twist
    8 groove.

    Also the H 50BMG works fine at our coldest temperatures (20 o + ) I don't know how it
    will work below that.

    PS: .5 with a stock barrel is very impressive also.

    J E CUSTOM