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Reloading Berger Bullets


Which brass for 300 win mag.

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Unread 08-05-2013, 08:27 PM
Junior Member
Join Date: Oct 2012
Posts: 14
Which brass for 300 win mag.

Since I can't seem to get winchester, what is the go to brass for you professionals out there for the 300 win mag.
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Unread 08-06-2013, 05:30 AM
Platinum Member
Join Date: Jan 2008
Location: Northeast
Posts: 3,624
Re: Which brass for 300 win mag.

I make no claim of being a professional, but I ran into the same issue with Winchester brass availability and ended up trying Norma brass which has been readily available from Sinclairs. It's more expensive, but I really like the brass. I'm up to 10 reloads with an annealing every 4-5 loadings with no signs of stress or loose primer pockets. The total case capacity of the Norma brass measured with Retumbo is 2.3 grains higher than the Winchester brass, and the case body above the belt is .001-002" larger. Headspace of new brass is identical, as is the wall thickness at the neck. The Norma primer pockets are a very tight fit with Fed215 primers. I use 79gr of Retumbo with Berger 210 VLD's to get 2880FPS out of my 26" Milspec Rem 700, ES 6, and sub .5MOA- 5 shot groups. Hope this helps.

"Let us speak courteously, deal fairly, and keep ourselves armed and ready"-T. Roosevelt
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Unread 08-07-2013, 10:17 AM
Silver Member
Join Date: Nov 2011
Location: McLeod MT
Posts: 387
Re: Which brass for 300 win mag.

I do not shoot a win mag but I can second that Norma Brass is as good as it gets for belted mags. The primer pockets will last twice as long and its good solid brass.
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