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Do you enable Powder Temperature using Shooter?
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<blockquote data-quote="MMERSS" data-source="post: 886061" data-attributes="member: 63748"><p>You should consider using same procedures same day when conducting temperature regression testing. Obviously what we are after is the change in velocity with a change in powder temperature. Depending on your chronograph and to ensure our delta V is as accurate as possible your chronograph should be set up same day throughout testing. </p><p> </p><p> Here is what I do when conducting testing.</p><p> </p><p> </p><ul> <li data-xf-list-type="ul">Load 9 (3x3) rounds.</li> <li data-xf-list-type="ul">Shoot on a cold day, cooler than your average hunting temperatures maybe by 20 degrees.</li> <li data-xf-list-type="ul">Place three rounds on the shooting bench.</li> <li data-xf-list-type="ul">Place six rounds in your truck and turn on the heater.</li> <li data-xf-list-type="ul">Place three of the six rounds under your heater vent. This temperature should be around 70 to 90 deg.</li> <li data-xf-list-type="ul">Place the remaining three of the six rounds on your rear floor or another cool spot in your vehicle. This temperature should be around 40-50 deg.</li> </ul><p> </p><p> For example, outside temperatures are 20 degrees with your average hunting temperature around 40 degrees. </p><p> </p><p> Place your ammo outside and in the truck as indicated above. Let your ammo set for approximately 20 minutes to stabilize the powder temperature. Use this time to set up targets (200 yards or farther if you can) and your chronograph.</p><p> </p><p> Shoot your first three rounds and record muzzle velocities and outside temperature.</p><p> Let the gun cool, shouldn't take long in cold temperatures.</p><p> Place your Kestrel next to three of the rounds in your truck. After your gun cools, remove the three rounds from the truck, record temperature and shoot these rounds fairly quick. Record velocities. Let the gun cool and repeat with the remaining three rounds in the truck.</p><p> </p><p> You should now have data showing an average muzzle velocity increase with an increase in powder temperature. Hopefully you have good data for approximately 20, 40 and 70 degrees. You will use this data in your program when selecting temperature regression ON.</p><p> </p><p> You can also check the three round groups to see if there is any indication of significant pressure increases with powder temperature causing POI and POA and/or accuracy changes.</p></blockquote><p></p>
[QUOTE="MMERSS, post: 886061, member: 63748"] You should consider using same procedures same day when conducting temperature regression testing. Obviously what we are after is the change in velocity with a change in powder temperature. Depending on your chronograph and to ensure our delta V is as accurate as possible your chronograph should be set up same day throughout testing. Here is what I do when conducting testing. [LIST] [*]Load 9 (3x3) rounds. [*]Shoot on a cold day, cooler than your average hunting temperatures maybe by 20 degrees. [*]Place three rounds on the shooting bench. [*]Place six rounds in your truck and turn on the heater. [*]Place three of the six rounds under your heater vent. This temperature should be around 70 to 90 deg. [*]Place the remaining three of the six rounds on your rear floor or another cool spot in your vehicle. This temperature should be around 40-50 deg. [/LIST] For example, outside temperatures are 20 degrees with your average hunting temperature around 40 degrees. Place your ammo outside and in the truck as indicated above. Let your ammo set for approximately 20 minutes to stabilize the powder temperature. Use this time to set up targets (200 yards or farther if you can) and your chronograph. Shoot your first three rounds and record muzzle velocities and outside temperature. Let the gun cool, shouldn’t take long in cold temperatures. Place your Kestrel next to three of the rounds in your truck. After your gun cools, remove the three rounds from the truck, record temperature and shoot these rounds fairly quick. Record velocities. Let the gun cool and repeat with the remaining three rounds in the truck. You should now have data showing an average muzzle velocity increase with an increase in powder temperature. Hopefully you have good data for approximately 20, 40 and 70 degrees. You will use this data in your program when selecting temperature regression ON. You can also check the three round groups to see if there is any indication of significant pressure increases with powder temperature causing POI and POA and/or accuracy changes. [/QUOTE]
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Do you enable Powder Temperature using Shooter?
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