300 WSM Loads

Discussion in 'Reloading' started by baldhunter, Feb 21, 2009.

  1. baldhunter

    baldhunter Well-Known Member

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    Jun 18, 2008
    I'm planning on loading my 300 WSM with 165gr and maybe 180gr bullets.The powders I'll be working with are:
    IMR-4350
    Reloader-22
    Winchester WXR
    Anybody got any load suggestions with these powders.
    Thanks
     

  2. MontanaRifleman

    MontanaRifleman Well-Known Member

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    May 21, 2008
    You might look at H4350 and Reloader17. Start around 61-62grs and look for max about 65 give or take, depending on bullet and seating.

    Haven't used the other powders in the 300 WSM, so cant help you there.
     

  3. ZSteinle

    ZSteinle Well-Known Member

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    I have had good luck with H-4350 also. 168gr. i am using 64gr. of H4350
     
  4. DrMike

    DrMike Active Member

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    Feb 21, 2009
    One of my favourite hunting loads is 69.5 grains of WXR with CCI250 primers and 180 grain Fail Safes. Velocity is ~2950 with sub-MOA groups. 68.5 grains of WXR and WLRM primers gave good groups with both 180 grain Nosler Partitions and 180 grain Kodiaks. I have used this load with Speer Grand Slams with good results (3/4 to 1 inch groups and velocities to 3000 fps @ 70 grains).

    63 grains of IMR4350 and WLRM primers yields sub MOA groups with Hornady 180 grain SP (velocity = 2850). Upping charge to 65 grains yields velocities of 2950 without degrading groups size significantly. 65 grains of IMR4350 and WLRM primers gives 1/2 inch groups with 180 grain Hornady InterBonds and velocities of 2967 +/- 8 fps.

    With 165/168 grain bullets, I have had excellent success with IMR4831, RL15 and H380.
     
  5. britz

    britz Well-Known Member

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    I have good luck with H4350, CCIBR2, win cases, and 180 Nosler AB's. I used to use IMR4350 but switched to the Hodgdon extreme line simply because of the temp sensitivity of the older IMR poweders.