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Rifles, Reloading, Optics, Equipment
Reloading
Powders and MV change in cold temps
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<blockquote data-quote="bedrok" data-source="post: 491409" data-attributes="member: 25202"><p>I included 7828 in a test I did a couple of years ago with identical loads of various powders shot first at -21 deg. f and later at 63 deg f. 7828 did well. (average diff. was a little over 120 fps) just a little worse than IMR4350 and H4831, but you would still need to compensate for it at long range. I gotta get some IMR8208 XBR and see if it's as insensitive as they claim.</p><p> </p><p>Another thing about shooting in extreme cold: My first shot from a cold barrel is ALWAYS much slower. I attribute this to the barrel contracted but was never sure.</p></blockquote><p></p>
[QUOTE="bedrok, post: 491409, member: 25202"] I included 7828 in a test I did a couple of years ago with identical loads of various powders shot first at -21 deg. f and later at 63 deg f. 7828 did well. (average diff. was a little over 120 fps) just a little worse than IMR4350 and H4831, but you would still need to compensate for it at long range. I gotta get some IMR8208 XBR and see if it's as insensitive as they claim. Another thing about shooting in extreme cold: My first shot from a cold barrel is ALWAYS much slower. I attribute this to the barrel contracted but was never sure. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Powders and MV change in cold temps
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