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Rifles, Reloading, Optics, Equipment
Reloading
Why do I need so much powder?
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<blockquote data-quote="308win" data-source="post: 2250729" data-attributes="member: 102230"><p>I've been wanting to start a thread and ask the same question....here's what I'm running into. </p><p></p><p>My reloading room is separate from my shooting range. I can shoot out the backdoor of the reloading room and do testing powder charges. I will put a charge together and step out the door and fire over a Labradar to verify velocity and immediately go put the information into quickload and adjust as necessary. Next I put 3 rounds together and again verify with the Labradar. When I get to the desired results I immediately load up another 3 shot string to verify at the range. This is where it gets interesting.....I'm usually able to go out and shoot the next day but sometimes it's a week or more? Regardless, my velocities decrease on average by 100fps from loading room to range. I have 2 different theories, either the Labradar is subject to differences in temperature (going from a 72° a/c room to 90°+ Texas heat within minutes) or there is some kind of brass relaxing going on and giving me less neck tension? I don't know enough about the subject to say either way, just my observations. Interested to see what kind of Chronograph you are using and at what temperature? The Labradar is a doppler device and I wouldn't think it would be effected by temperature, but then again.....electronics???</p></blockquote><p></p>
[QUOTE="308win, post: 2250729, member: 102230"] I've been wanting to start a thread and ask the same question....here's what I'm running into. My reloading room is separate from my shooting range. I can shoot out the backdoor of the reloading room and do testing powder charges. I will put a charge together and step out the door and fire over a Labradar to verify velocity and immediately go put the information into quickload and adjust as necessary. Next I put 3 rounds together and again verify with the Labradar. When I get to the desired results I immediately load up another 3 shot string to verify at the range. This is where it gets interesting.....I'm usually able to go out and shoot the next day but sometimes it's a week or more? Regardless, my velocities decrease on average by 100fps from loading room to range. I have 2 different theories, either the Labradar is subject to differences in temperature (going from a 72° a/c room to 90°+ Texas heat within minutes) or there is some kind of brass relaxing going on and giving me less neck tension? I don't know enough about the subject to say either way, just my observations. Interested to see what kind of Chronograph you are using and at what temperature? The Labradar is a doppler device and I wouldn't think it would be effected by temperature, but then again.....electronics??? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Why do I need so much powder?
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