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.340 Weatherby Ammunition

Also known as: .340 Weatherby Magnum, 340 Weatherby Magnum

Roy Weatherby released the new .340 in 1963 in response to the competitor’s .338 Winchester. The 340 Weatherby uses the same bullet size as the 338 Win Mag, but it offers more powerful velocities. Today, this caliber is still available on a limited basis, but field tests show that it can still outperform the 300 Ultra Mag, 338 Win Mag, and larger rivals like the 375 H&H.

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