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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
N568 Vihtavuori Powder
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<blockquote data-quote="highdrum" data-source="post: 2347365" data-attributes="member: 13732"><p>I built a 257 blackbird aka 25 blaser mag. With 135 bergers I hit pressure at same velocity with N568 as Retumbo, right at 3400fps. However the charge with N568 was 4gr more than Retumbo with much more case fill.</p></blockquote><p></p>
[QUOTE="highdrum, post: 2347365, member: 13732"] I built a 257 blackbird aka 25 blaser mag. With 135 bergers I hit pressure at same velocity with N568 as Retumbo, right at 3400fps. However the charge with N568 was 4gr more than Retumbo with much more case fill. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
N568 Vihtavuori Powder
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