Like the 264 on 300 Win Mag improved. Should give a bit more powder volume than 6.5-300 Wby if bullet is kept out of boiler room. The old 264 Mashburn was a full length 375 H&H with a long neck.
Problem with super long bullets and fast twist rifles will be friction and only way to deal with it is coated bullets. Moly coating has given way to newer improved coatings that are easier to work with and bore cleaning is simple, returning to previous accuracy by swabbing barrel with friction fighter with one quick swab.
frictionfighters.com out of Missasauga ON sells tungston disulfide.
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Last edited by DaleJ; 07-03-2016 at 09:32 AM.
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