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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
primer pocket blow out.???
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<blockquote data-quote="Pdvdh" data-source="post: 1398114" data-attributes="member: 4191"><p>Yes, I do think the human eye will notice the difference in the powder column height measuring two grains of powder weight.</p><p></p><p>More importantly, visible inspection will easily detect a casing overcharged with sufficient powder to expand a normal strength case head by 0.050". If this casing had normal case head strength (wasn't a defective casing), then I'll go on record as stating it would</p><p>have required more than 2 grains of additional powder to permanently deform/expand/enlarge this casing 0.050", compared to a normal load expanding the case web by less than 0.0005". In my opinion, 4 or more extra grains of H4831 powder would have been required to bulge a 7mm RM case to this extent. Even two grains of excess powder will be visible inside the casing, in the midst of other properly powder charged cases. 4 or more grains of excess powder will be screaming out. You'll probably even see a little red flag protruding from the case mouth at 4 grains excess powder.</p><p></p><p>The value of the visible inspection of the powder charges in the casings before seating any bullets is the prevention of an overcharged case that shoots the barrel down range along with the bullet.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 1398114, member: 4191"] Yes, I do think the human eye will notice the difference in the powder column height measuring two grains of powder weight. More importantly, visible inspection will easily detect a casing overcharged with sufficient powder to expand a normal strength case head by 0.050". If this casing had normal case head strength (wasn't a defective casing), then I'll go on record as stating it would have required more than 2 grains of additional powder to permanently deform/expand/enlarge this casing 0.050", compared to a normal load expanding the case web by less than 0.0005". In my opinion, 4 or more extra grains of H4831 powder would have been required to bulge a 7mm RM case to this extent. Even two grains of excess powder will be visible inside the casing, in the midst of other properly powder charged cases. 4 or more grains of excess powder will be screaming out. You'll probably even see a little red flag protruding from the case mouth at 4 grains excess powder. The value of the visible inspection of the powder charges in the casings before seating any bullets is the prevention of an overcharged case that shoots the barrel down range along with the bullet. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
primer pocket blow out.???
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