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Rifles, Reloading, Optics, Equipment
Reloading
Relative Burn Rate Charts. . .
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<blockquote data-quote="J E Custom" data-source="post: 1453839" data-attributes="member: 2736"><p>The main thing to understand about burn rate charts is that even though a powder falls just above or below another powder, the burn rate is not linear. It may be very close to the next powder or very far away from the same burn rate.</p><p></p><p>So if you want to increase or decrease the burn rate you must/should</p><p>start at the lowest charge with the new powder and work back up. As stated, powders react differently in different case volumes ( I have a 7/08 and a 7/08 AI and they produce different pressures and velocities with the same powder and charge weight. they also produce different pressures and velocities while fire forming using the standard 7/08 load in a larger chamber (7/08 AI) than in a 7/08 SAMMI chamber.</p><p></p><p>Also even though the powders are in the same burn rates they can be slightly different so when you substitute one brand for another in the same burn rate, It would be prudent to reduce the load weight slightly to compensate for the difference.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1453839, member: 2736"] The main thing to understand about burn rate charts is that even though a powder falls just above or below another powder, the burn rate is not linear. It may be very close to the next powder or very far away from the same burn rate. So if you want to increase or decrease the burn rate you must/should start at the lowest charge with the new powder and work back up. As stated, powders react differently in different case volumes ( I have a 7/08 and a 7/08 AI and they produce different pressures and velocities with the same powder and charge weight. they also produce different pressures and velocities while fire forming using the standard 7/08 load in a larger chamber (7/08 AI) than in a 7/08 SAMMI chamber. Also even though the powders are in the same burn rates they can be slightly different so when you substitute one brand for another in the same burn rate, It would be prudent to reduce the load weight slightly to compensate for the difference. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Relative Burn Rate Charts. . .
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