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Rifles, Reloading, Optics, Equipment
Reloading
Testing primers
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<blockquote data-quote="J E Custom" data-source="post: 1678449" data-attributes="member: 2736"><p>Always drop down on the powder charge when testing, unless your load is mild in the first place.</p><p></p><p>There are charts that will tell you what heat the primer you are using and then you can pick one in the same general heat range. If you go from a large rifle primer to a magnum primer, you can expect more pressure and velocity, so I recommend lowering the powder charge to a minimum load and try both the primer you normally use and the test primer you are looking at. you will probably see an increase in velocity, but often the SDs also go up telling you that this new primer will not necessarily be more accurate.</p><p></p><p><a href="https://www.google.com/search?rlz=1C1GGGE_enUS409&tbm=isch&sa=1&ei=Gho1Xae9FILktQX7-67wAw&q=+rifle+primer+bristance&oq=+rifle+primer+bristance&gs_l=img.12...8723.25008..28507...0.0..0.89.1538.24......0....1..gws-wiz-img.......0j0i30j0i5i30j0i8i30.Eg76uxvTqtY&ved=0ahUKEwinsrGsuMfjAhUCcq0KHfu9Cz4Q4dUDCAY#imgrc=5Z3AC1BqTug6FM" target="_blank">https://www.google.com/search?rlz=1C1GGGE_enUS409&tbm=isch&sa=1&ei=Gho1Xae9FILktQX7-67wAw&q=+rifle+primer+bristance&oq=+rifle+primer+bristance&gs_l=img.12...8723.25008..28507...0.0..0.89.1538.24......0....1..gws-wiz-img.......0j0i30j0i5i30j0i8i30.Eg76uxvTqtY&ved=0ahUKEwinsrGsuMfjAhUCcq0KHfu9Cz4Q4dUDCAY#imgrc=5Z3AC1BqTug6FM</a>:</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1678449, member: 2736"] Always drop down on the powder charge when testing, unless your load is mild in the first place. There are charts that will tell you what heat the primer you are using and then you can pick one in the same general heat range. If you go from a large rifle primer to a magnum primer, you can expect more pressure and velocity, so I recommend lowering the powder charge to a minimum load and try both the primer you normally use and the test primer you are looking at. you will probably see an increase in velocity, but often the SDs also go up telling you that this new primer will not necessarily be more accurate. [URL]https://www.google.com/search?rlz=1C1GGGE_enUS409&tbm=isch&sa=1&ei=Gho1Xae9FILktQX7-67wAw&q=+rifle+primer+bristance&oq=+rifle+primer+bristance&gs_l=img.12...8723.25008..28507...0.0..0.89.1538.24......0....1..gws-wiz-img.......0j0i30j0i5i30j0i8i30.Eg76uxvTqtY&ved=0ahUKEwinsrGsuMfjAhUCcq0KHfu9Cz4Q4dUDCAY#imgrc=5Z3AC1BqTug6FM[/URL]: J E CUSTOM [/QUOTE]
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Testing primers
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