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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Throat erosion and double-based powders.
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<blockquote data-quote="kc0pph" data-source="post: 635216" data-attributes="member: 35934"><p>I hear H-870 is the powder to use for extreme overbore shooting. I have a 338-378 which is overbore and running around 115gn of the 870 through it., I have played with other powders and only 870 will get them 300 pills flying fast. </p><p></p><p>Not sure if 7mm is too small of a bore to benefit from 870 but you might give it a try. Thunderbird sells it for 88 per 8lb keg, and another guy GIBRASS (i think) sells it for 46 per 8 lb keg.</p></blockquote><p></p>
[QUOTE="kc0pph, post: 635216, member: 35934"] I hear H-870 is the powder to use for extreme overbore shooting. I have a 338-378 which is overbore and running around 115gn of the 870 through it., I have played with other powders and only 870 will get them 300 pills flying fast. Not sure if 7mm is too small of a bore to benefit from 870 but you might give it a try. Thunderbird sells it for 88 per 8lb keg, and another guy GIBRASS (i think) sells it for 46 per 8 lb keg. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Throat erosion and double-based powders.
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