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Vihtavouri N540 or N550 powder

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  #1  
Unread 06-09-2013, 07:14 AM
CWQ CWQ is offline
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Vihtavouri N540 or N550 powder

I have run out of RL 15. Should I use Vihtavouri N540 or N550 powder.

I am shooting 175 grain Sierra Match Kings with an Accuracy International 308, 24" barrel, model AE Mk 3 with a 1:12 twist rate.

many thanks
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  •   #2  
    Unread 06-09-2013, 05:32 PM
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    Re: Vihtavouri N540 or N550 powder

    N540 for up to 190s in some barrels, n530 in others and n550 yet in others. I'd start with 540. I've run a lot of 540 and 550 in 308s running 168s up to the 208s. 540 has been stellar in both accuracy and velocity for 168-190. 550 is better for the heavies.
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      #3  
    Unread 06-11-2013, 06:47 PM
    CWQ CWQ is offline
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    Re: Vihtavouri N540 or N550 powder

    Thanks, I was leaning to 540 and you confirmed it.
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      #4  
    Unread 06-12-2013, 10:10 PM
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    Re: Vihtavouri N540 or N550 powder

    Were you using RL15 for the bullets you mentioned???
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