Reloading the 300 saum

Discussion in 'Reloading' started by Sendero270, Jun 27, 2011.

  1. Sendero270

    Sendero270 Member

    Nov 15, 2010
    I just recently purchased a Ruger M77 Mii chambered for 300 rsaum. There really isn't much out there as far as reloading information on it. What I was wondering is, is there anybody out there who has had some experience reloading this cartridge and what seems to work for you. Thanks for your time.
  2. Reloader

    Reloader Well-Known Member

    May 27, 2004

    I have only worked with a few loads so far in a Sendero SF 300SAUM. 178Amax over R22, 168CTNBTs over H380, and 165NBTs over both H4350 and IMR4350 have all shot fairly well.

    Here are 3 quick 3 shot groups back to back at 100 with 3 loads:


    I'm sure it will work quite well with many more. It's been a very easy cart to work with.

    Have a good one,


  3. TJAY

    TJAY Well-Known Member

    Jul 1, 2007
    I load for two 300SAUMs both Rem M7. Here are a few that work for me.

    165 Barnes tsx R-17 64 gr. fed 215

    150 Barnes tsx R-17 65 gr. fed 215

    150 Hornady IB Varget 58 gr. fed 210

    180 Rem CL IMR4007 58 gr. fed 210

    These loads shoot very well in both rifles. The R-17 are MAX for me so do your own work up..