- United States Cartridge Cases
- 7MM MASHBURN SUPER MAGNUM
7MM MASHBURN SUPER MAGNUM
7MM MASHBURN SUPER MAGNUM
QUANTITY 20
All cases have been fully formed from New PPU 300 Winhester Magnum Brass, All have been annealed 2x, fully formed , trimmed to proper length, chamfered, deburred and tumbled polished
All cases are fully prepped and ready to load
QUANTITY 20
All cases have been fully formed from New PPU 300 Winhester Magnum Brass, All have been annealed 2x, fully formed , trimmed to proper length, chamfered, deburred and tumbled polished
All cases are fully prepped and ready to load
7MM Mashburn Super Magnum
One of the most well-known wildcatters prior to the 1960s was Art Mashburn, with his 7mm Mashburn (short), 7mm Mashburn Super Magnum and a 7mm Mashburn Magnum (long), the latter of which was based on the full-length .300 H&H or .300 Weatherby cases, while the middle version closely resembles the .300 Winchester Magnum with a longer neck. The short version was similar to the Ackley, Sharpe & Hart and .285 Luft magnums. All three had 30-degree shoulder angles, apparently to help form a longer neck length than a 7mm-300 Winchester Magnum might offer with a 25-degree shoulder, unless the shoulder is bumped back .010 inch or so, which is standard for most factory belted magnums, with the exception of the Weatherbys.
AMMUNITIONARTIFACTS has now recreated the 7MM Mashburn Super Magnum. This cartridge is widely discussed by PO Ackley in Volume 1 “ Handbook for Shooters and Reloaders” . There is also Loading data to compliment the text.
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Quantity 50,
All cases have been formed from NEW PPU 22 Hornet brass. Each case has been annealed 2x, fully formed, full length sized, trimmed to proper length, chamfered, deburred and tumble polished
Return Policy:
AmmunitionArtifacts will not accept returns that have been altered by customers in any way. This includes trimming sanding or otherwise.
All cases are fully prepped and ready to load