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Rifles, Reloading, Optics, Equipment
Reloading
looking for 338-378 load data
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<blockquote data-quote="Long Time Long Ranger" data-source="post: 691914" data-attributes="member: 505"><p>Only the slowest powders available make this cartridge what it is which is bad to the bone. You can get by with something as fast as Retumbo with lighter bullets but nothing faster will give you the velocity you look for in a cartridge this size. Thunderbird cartridge company sells powder and say the H-870 they sale is the same as the old H-870. If it is that is where I would go. H-870 is the powder I have always shot out of the 338-378 wby since 1979 to get top performance. I have tried virtually every new powder that has come out since then but nothing has beaten H-870. Everything else is just to fast for it to get top velocity. Accuracy yes because it is a very accurate cartridge with many 1 mile + kills recorded. But velocity and accuracy requires something slow like h870.</p></blockquote><p></p>
[QUOTE="Long Time Long Ranger, post: 691914, member: 505"] Only the slowest powders available make this cartridge what it is which is bad to the bone. You can get by with something as fast as Retumbo with lighter bullets but nothing faster will give you the velocity you look for in a cartridge this size. Thunderbird cartridge company sells powder and say the H-870 they sale is the same as the old H-870. If it is that is where I would go. H-870 is the powder I have always shot out of the 338-378 wby since 1979 to get top performance. I have tried virtually every new powder that has come out since then but nothing has beaten H-870. Everything else is just to fast for it to get top velocity. Accuracy yes because it is a very accurate cartridge with many 1 mile + kills recorded. But velocity and accuracy requires something slow like h870. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
looking for 338-378 load data
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