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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
tempature and point of impact and powder?
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<blockquote data-quote="Gun5tuff" data-source="post: 36335" data-attributes="member: 3158"><p>Haeffnkr has raised a point that should be addressed by powder manufacturers and made available to hunters.</p><p></p><p>I was developing a load to fit the ballistics of my scope and wanted 2750 ft/sec from a 180gr Hornady BTSP in a .30-06 case. I used 56.0 gr of H4350. At 95 degrees F the load gave me 2822 +/- 8 ft/sec while at 33 degrees F the same load gave me 2752 +/- 9 ft/sec for a 6-round average. I am happy with this load but I still need to test it at long range to see if it actually does fit the published ballistics of my scope. The main point of this thread, however, is the change in bullet velocity as a function of temperature. For all practical purposes (and hunting is such a purpose)it isn't anything to worry about unless you want to be prepared to take a long shot with greater confidence.<strong>Haeffnkr</strong></p></blockquote><p></p>
[QUOTE="Gun5tuff, post: 36335, member: 3158"] Haeffnkr has raised a point that should be addressed by powder manufacturers and made available to hunters. I was developing a load to fit the ballistics of my scope and wanted 2750 ft/sec from a 180gr Hornady BTSP in a .30-06 case. I used 56.0 gr of H4350. At 95 degrees F the load gave me 2822 +/- 8 ft/sec while at 33 degrees F the same load gave me 2752 +/- 9 ft/sec for a 6-round average. I am happy with this load but I still need to test it at long range to see if it actually does fit the published ballistics of my scope. The main point of this thread, however, is the change in bullet velocity as a function of temperature. For all practical purposes (and hunting is such a purpose)it isn't anything to worry about unless you want to be prepared to take a long shot with greater confidence.[B]Haeffnkr[/B] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
tempature and point of impact and powder?
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