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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
n570 temperature stability
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<blockquote data-quote="Veteran" data-source="post: 2316791" data-attributes="member: 118038"><p>Yes, the problem you are likely to face is not 95 degrees at 10,000 feet, but 20 degrees and even 20 below later in the season.</p><p>So, what's likely is you load developed at hot temps a lower elevation will slow down due to temp and effect on burn rate, but </p><p>speed up over distance range due to lower air density. So, its really impossible without detailed modeling or taking actual sighting </p><p>data and velocities on spot to know what the combined impact will be. Got to sight and take velocities at altitude and temp to </p><p>really get a handle on it. Any your velocity node from load development is possible out the window a bit too from temp. slow down.</p><p></p><p>So, getting some 100 yard group size at altitude and temp. is not a bad idea either. Like benchrest guys who travel a lot to matches in different altitudes and weather, having a barrel tuner to make fine adjustments to temperature and burn rate for loads developed </p><p>back home is not a bad thing either. Hard to change ammo once developed, but your barrel tune can be easily tweaked at the new location with a tuner for any ammo.</p></blockquote><p></p>
[QUOTE="Veteran, post: 2316791, member: 118038"] Yes, the problem you are likely to face is not 95 degrees at 10,000 feet, but 20 degrees and even 20 below later in the season. So, what's likely is you load developed at hot temps a lower elevation will slow down due to temp and effect on burn rate, but speed up over distance range due to lower air density. So, its really impossible without detailed modeling or taking actual sighting data and velocities on spot to know what the combined impact will be. Got to sight and take velocities at altitude and temp to really get a handle on it. Any your velocity node from load development is possible out the window a bit too from temp. slow down. So, getting some 100 yard group size at altitude and temp. is not a bad idea either. Like benchrest guys who travel a lot to matches in different altitudes and weather, having a barrel tuner to make fine adjustments to temperature and burn rate for loads developed back home is not a bad thing either. Hard to change ammo once developed, but your barrel tune can be easily tweaked at the new location with a tuner for any ammo. [/QUOTE]
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n570 temperature stability
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