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What is the best 300 win Mag powder

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  #1  
Unread 10-10-2013, 03:58 PM
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What is the best 300 win Mag powder

I'm new to reloading 300 Win and I'm stuck between RL 22, IMR 4350 and H4831. What powder is good for the 180 gr bullets. I have read that standard primers work better for the 300 win. I will work the load up, just need opinions on powder choice. Its a 24inch barrel on rem 700 action.
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  •   #2  
    Unread 10-10-2013, 04:54 PM
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    Re: What is the best 300 win Mag powder

    4831sc
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      #3  
    Unread 10-10-2013, 05:27 PM
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    Re: What is the best 300 win Mag powder

    IMR4350 and a few others of that speed has produced the best accuracy with 180's through 200's in competition with the .300 Win Mag.

    Several slower powders shoot those bullets out faster with the same peak pressure, but they may not all land on target too close together.
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      #4  
    Unread 10-10-2013, 05:30 PM
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    Re: What is the best 300 win Mag powder

    H-1000 has been very good to me. But I load mostly 210 to 230 gr bullets in the 300 wins. That said it is also very accurate with great velocity in the 7mm/300 wins with 180's.

    Jeff
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      #5  
    Unread 10-10-2013, 06:02 PM
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    Re: What is the best 300 win Mag powder

    I have used ALL of these with equal success with varying 180 bullets from Nosler, Swift, Hornady, Speer, etc.:

    H1000
    Re22
    IMR4831
    IMR4350
    H4831SC
    VV N560

    For me it was a toss up between Re22 and H1000. I owned 2 different 300 WMs and together, killed more game with loads using Re22. Just got best velocity and accuracy year after year.
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      #6  
    Unread 10-10-2013, 06:20 PM
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    Re: What is the best 300 win Mag powder

    I get sub 1/2" from 180gn SMK's and a max load of RL22 and 9.5M primers. I use the same powder charge but swap out primers with CCI BR2's when using 180gn Ballistic Tips. When loading the 185gn VLD and the 190 SMK, I use H1000 w/CCI 250's and accuracy is unbelievable! Good shooting! JohnnyK.
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      #7  
    Unread 10-10-2013, 10:14 PM
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    Re: What is the best 300 win Mag powder

    +1 for H1000 and CCI 250. Very accurate in my rifles with both 185 Berger and 180 Scirocco.
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