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Rifles, Reloading, Optics, Equipment
Reloading
Norma MRP temp sensitive?
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<blockquote data-quote="Mike Matteson" data-source="post: 3095221" data-attributes="member: 101791"><p>I am glad you stop worrying temp powders. Someday you'll blow a primer out of your case because to temp sensitivity powder, and wish you had paid closer attention to it. IMR 4831 changes over 1 fps per degr of change. Other words that in -20 to 110 dr, that's 130fps change. Even if you use the mean of the temp it still 65fps. 50fps changes your POI by 14" @ a 1000yds.</p><p>Bryan Litz is right on on what he's stating. </p><p>I don't generally is double base powders if I can help it anymore. Because I did blow a primer out of a case because of temp change.</p><p>I don't care what type of powder you use, but you need to well aware of possible problems with different types of powders.</p></blockquote><p></p>
[QUOTE="Mike Matteson, post: 3095221, member: 101791"] I am glad you stop worrying temp powders. Someday you'll blow a primer out of your case because to temp sensitivity powder, and wish you had paid closer attention to it. IMR 4831 changes over 1 fps per degr of change. Other words that in -20 to 110 dr, that's 130fps change. Even if you use the mean of the temp it still 65fps. 50fps changes your POI by 14" @ a 1000yds. Bryan Litz is right on on what he's stating. I don't generally is double base powders if I can help it anymore. Because I did blow a primer out of a case because of temp change. I don't care what type of powder you use, but you need to well aware of possible problems with different types of powders. [/QUOTE]
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Reloading
Norma MRP temp sensitive?
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