The muzzle velocities achieved in the magnum class of cartridges are some of the highest in the industry. Magnum's excellent velocities coupled with its cleanliness make it a great choice for high volume match shooters. Ramshot Big Boy powder was renamed Ramshot Magnum in 2001. Big Boy and Magnum are the exact same powder - just a new name. Data using Ramshot Big Boy is applicable for Ramshot Magnum.
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