338-378 starting loads

Discussion in 'The Basics, Starting Out' started by Guest, Dec 30, 2002.

  1. Guest

    Guest Guest

    looking for some pointers from the big boys. this is my first BIG rifle. it's built on a win pre 64 70 action with a 29" stainless fluted barrel any help, recommendations, or pointers appreciated. Steve.
  2. Boyd Heaton

    Boyd Heaton Well-Known Member

    May 14, 2001
    What bullet
  3. Guest

    Guest Guest

    i'd start with a 225 gr. Barnes X.
    But I'm open to suggestions.
  4. Guest

    Guest Guest

    300 grain matchking?
  5. Brent

    Brent Well-Known Member

    Jun 12, 2001
    The SMKs are hard to beat for accuracy.
    If you seat the 300gr SMK long at 4.100" like my brother does, his throat permits it, his max load is 118gr H870 and groups well. Start low and work up. He's getting 3000 fps out of a 32" tube with the 300.

    The X bullet is a good bullet to, some of the flatbases seem to shoot better than the boattails though.
  6. Guest

    Guest Guest

    How far will you be shooting and at what game?
  7. dgr416

    dgr416 Well-Known Member

    Mar 17, 2003
    I need data for 300 gr boat tails used out of a Weatherby accumark .I am using reloader 25 powder .I have shot .25 groups with this rifle using Nosler partitions and 110 grs of reloader 25.I also have a large quanity of Norma MPR powder I took out of weatherby 416 Norma loads I need any data for 338-378 with 250 gr and 300 gr.I have two of these rifles just breaking other one in now.How does 300 gr serria bt work on game ?