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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
QuickLOAD way off from reality. Solutions?
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<blockquote data-quote="Veteran" data-source="post: 2442636" data-attributes="member: 118038"><p>QL gives me excellent data vs. chronograph for my .300 WM and .338 LM. The most key factors in quick load are the Case capacity in H20 weight, the barrel length from chamber to end of bbl, no to end of muzzle brake, and the burn rate and temperature on the day of shooting. The only issues I ever had of forecast vs. actuals was when shooting over 90 to 95 degrees when QL was run at 70 F.</p><p>Upping the temp in QL ups the burn rate dramatically or vice versa so it will reproduce actual environmental factors. </p><p></p><p>Leaving your ammo in the sun will impact it. </p><p></p><p>You also have true the burn rate of the powders you use in the model from lot to lot of powder. </p><p>Shoot some loads, and if they are off from forecast, adjust the burn rate until the actual velocity is matched.</p><p>Then use that new burn rate to forecast your next loads. It is smack on.</p><p></p><p>You cannot use mixed brass (volume differences Hornady may be 107 and Lapua 116 water weight) for reloading or use excessive crimping or neck tension perhaps without some deviation that will need to be history matched with custom adjustments to the model.</p></blockquote><p></p>
[QUOTE="Veteran, post: 2442636, member: 118038"] QL gives me excellent data vs. chronograph for my .300 WM and .338 LM. The most key factors in quick load are the Case capacity in H20 weight, the barrel length from chamber to end of bbl, no to end of muzzle brake, and the burn rate and temperature on the day of shooting. The only issues I ever had of forecast vs. actuals was when shooting over 90 to 95 degrees when QL was run at 70 F. Upping the temp in QL ups the burn rate dramatically or vice versa so it will reproduce actual environmental factors. Leaving your ammo in the sun will impact it. You also have true the burn rate of the powders you use in the model from lot to lot of powder. Shoot some loads, and if they are off from forecast, adjust the burn rate until the actual velocity is matched. Then use that new burn rate to forecast your next loads. It is smack on. You cannot use mixed brass (volume differences Hornady may be 107 and Lapua 116 water weight) for reloading or use excessive crimping or neck tension perhaps without some deviation that will need to be history matched with custom adjustments to the model. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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QuickLOAD way off from reality. Solutions?
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