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Rifles, Reloading, Optics, Equipment
Reloading
6.5 PRC Hornady 147 gr. ELD Match factory powder
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<blockquote data-quote="Nimrodmar10" data-source="post: 1766595" data-attributes="member: 36369"><p>It's not hard to duplicate the velocity and COAL, but each powder is different. They have different burn rates, coatings, peak pressure curves and physical dimensions. It's more about minimum extreme spreads and standard deviation between shots. Some are just more accurate than others.</p><p>Without precision measuring equipment such as strain gauges and pressure barrels, it's hard for us hobby reloaders to really know what our pressures are. We can look for primer flattening, brass swipe and heavy bolt lift, but those are just S.W.A.G. (Scientific Wild Arse Guessing). Don't get me wrong, I use those indications too, but when we see one of those pressure signs, we don't know if we're 5,000 psi above SAAMI specs, or 5,000 psi from blowing the gun up. But if I can get the right bullet, powder, COAL, velocity and powder type, hopefully I can duplicate an accurate factory load</p></blockquote><p></p>
[QUOTE="Nimrodmar10, post: 1766595, member: 36369"] It's not hard to duplicate the velocity and COAL, but each powder is different. They have different burn rates, coatings, peak pressure curves and physical dimensions. It's more about minimum extreme spreads and standard deviation between shots. Some are just more accurate than others. Without precision measuring equipment such as strain gauges and pressure barrels, it's hard for us hobby reloaders to really know what our pressures are. We can look for primer flattening, brass swipe and heavy bolt lift, but those are just S.W.A.G. (Scientific Wild Arse Guessing). Don't get me wrong, I use those indications too, but when we see one of those pressure signs, we don't know if we're 5,000 psi above SAAMI specs, or 5,000 psi from blowing the gun up. But if I can get the right bullet, powder, COAL, velocity and powder type, hopefully I can duplicate an accurate factory load [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
6.5 PRC Hornady 147 gr. ELD Match factory powder
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