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AR30M/.338L/Blackhills 300gr. sierra

Discussion in 'Handloading and Reloading' started by gunnie, Jul 20, 2007.

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  1. gunnie

    gunnie Member

    Mar 23, 2007
    four part inquiry....

    1...has anyone out there chrono'd blackhills 300gr sierra BT through an AR30M in .338 Lapua? if so, what was muz-vel from same?

    2...what powder, in grains and primer would come close this excellent loading?

    3...i am unable to decide between getting the RCBS gold medal match series full length/neck sizer sets, or trying to have some custom made to a chamber mold...any thoughts on the pros and cons of these options?

    4...any other input or suggestions, except changing bullet weight?

    i am amazed how well this thing printed when dialing in the glass with the balckhills ammo from a bbl that hasn't even been broken in yet. i am equally amazed at the 33% jump in price since i bought the first 100 rounds. gotta start rolling my own or sell the house.

  2. Zak Smith

    Zak Smith Moderator Emeritus

    Dec 24, 2002
    Fort Collins, CO, USA.
    For the 300's, most people seem to be having luck with RL-25. I have also had good luck with Retumbo. Depending on your barrel and chamber, 2650-2800 is the right range.
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