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Rifles, Reloading, Optics, Equipment
Reloading
Real FPS load vs Book value? MAX load values?
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<blockquote data-quote="FearNoWind" data-source="post: 978165" data-attributes="member: 50867"><p>Muzzle velocity is influenced by many things other than the barrel length. The type of powder, COTB length, bullet weight, bullet composition, all make a difference. </p><p></p><p>Chronographs can be eccentric. Depending on the manufacturer, quality, effects of ambient atmospheric conditions (amount and direction of light, temperature, etc) and distance from the muzzle can affect their accuracy.</p><p></p><p></p><p>Loading beyond reloading manual maximum recommendations is not uncommon. But it is not advisable. Reloading ammunition is very dangerous and even the most experienced reloader has suffered a damaged or destroyed firearm or serious personal injury while "playing around" with max loads. Furthermore, max loads listed in manuals are often more than the specific firearm you might be using can handle safely.</p><p></p><p>My recommendation would be to avoid trying to get something out of a rifle that it isn't designed to produce. Staying within safe load limits and trying different bullets with minor adjustments in OAL can often get you closer than running high pressure loads.</p><p></p><p></p><p></p><p></p><p>The chronograph is useful at virtually any point in load development. It not only provides you with information of muzzle velocity but it allows for you to calculate average velocities, extreme spreads and standard deviations for each load you might want to test. Using a chronograph when "approaching max loads", IMO, has no bearing as an isolated special function of the chronograph. Be careful who you rely on for ballistics information.</p></blockquote><p></p>
[QUOTE="FearNoWind, post: 978165, member: 50867"] Muzzle velocity is influenced by many things other than the barrel length. The type of powder, COTB length, bullet weight, bullet composition, all make a difference. Chronographs can be eccentric. Depending on the manufacturer, quality, effects of ambient atmospheric conditions (amount and direction of light, temperature, etc) and distance from the muzzle can affect their accuracy. Loading beyond reloading manual maximum recommendations is not uncommon. But it is not advisable. Reloading ammunition is very dangerous and even the most experienced reloader has suffered a damaged or destroyed firearm or serious personal injury while "playing around" with max loads. Furthermore, max loads listed in manuals are often more than the specific firearm you might be using can handle safely. My recommendation would be to avoid trying to get something out of a rifle that it isn't designed to produce. Staying within safe load limits and trying different bullets with minor adjustments in OAL can often get you closer than running high pressure loads. The chronograph is useful at virtually any point in load development. It not only provides you with information of muzzle velocity but it allows for you to calculate average velocities, extreme spreads and standard deviations for each load you might want to test. Using a chronograph when "approaching max loads", IMO, has no bearing as an isolated special function of the chronograph. Be careful who you rely on for ballistics information. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Real FPS load vs Book value? MAX load values?
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