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Rifles, Reloading, Optics, Equipment
Reloading
Pressure signs
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<blockquote data-quote="Mike Matteson" data-source="post: 2009866" data-attributes="member: 101791"><p>I am aware of powder lots there is a burning rate change or can be. The extreme conditions needs to be watched very closely too. As I stated before, I ran into this problem in around 2000 with IMR 4350 & IMR 4831. Blow a primer out of case, and bolt was very hard to open. H4350sc had been out about that time I believe. Read up in the H4350 and changed over and never looked back. I hunt in weather temp. from +100 to -20 degree. I can't have the extreme change on how the powder is going to react. I do use W760 powder, and beginning to chart the difference in change in temperature. I haven't had any problems with W760 yet and used it in 100 degree and in 30 degree weather. I will this winter see how the w760 hold in velocity in in the colder temperature. The W760 load was develop in the warmer weather. The one thing I would like to see all powder companies have a chart on extreme conditions with their powders. I do weight all my cases. Have found that the heavier case that chamber pressure do change. I do load above what the reloading manuals call out for in developing a load. I don't just come up with a load and use it in different rifles. Each rifle that I load for is on it's own chart for loading. I do own more than one rifles in the same caliber, and load for other rifles that are the same cartridge.</p></blockquote><p></p>
[QUOTE="Mike Matteson, post: 2009866, member: 101791"] [I] [/I]I am aware of powder lots there is a burning rate change or can be. The extreme conditions needs to be watched very closely too. As I stated before, I ran into this problem in around 2000 with IMR 4350 & IMR 4831. Blow a primer out of case, and bolt was very hard to open. H4350sc had been out about that time I believe. Read up in the H4350 and changed over and never looked back. I hunt in weather temp. from +100 to -20 degree. I can't have the extreme change on how the powder is going to react. I do use W760 powder, and beginning to chart the difference in change in temperature. I haven't had any problems with W760 yet and used it in 100 degree and in 30 degree weather. I will this winter see how the w760 hold in velocity in in the colder temperature. The W760 load was develop in the warmer weather. The one thing I would like to see all powder companies have a chart on extreme conditions with their powders. I do weight all my cases. Have found that the heavier case that chamber pressure do change. I do load above what the reloading manuals call out for in developing a load. I don't just come up with a load and use it in different rifles. Each rifle that I load for is on it's own chart for loading. I do own more than one rifles in the same caliber, and load for other rifles that are the same cartridge. [/QUOTE]
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