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The Range
Ammo & Reloading
Interesting COAL/O-Give #'s in my .300 PRC
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<blockquote data-quote="swampratt" data-source="post: 3968276" data-attributes="member: 15054"><p>When you jam and remove the markered case how long are the Jam marks ?</p><p></p><p>For my rifles the marks are usually .030" long.</p><p>So seating the bullet .030" deeper leaves ZERO marks on a colored bullet.</p><p>If I seat .025" from jam I just touch the rifling and get marks on the bullet of course about .005" long.</p><p></p><p>.005" off the lands has worked well for me and many rifles but then there are those bullets that like to jump .060" or more. I had some Bergers that did not group well until I set them to jump a long ways like that.</p><p></p><p>Just boils down to experimenting.</p><p>I assume a lot of that bullet bearing surface is in the case.</p><p></p><p>Sometimes I can find a sweet spot when the boat tail is just past the bottom of the neck.</p><p></p><p>Still it boils down try and see what your rifle likes.</p></blockquote><p></p>
[QUOTE="swampratt, post: 3968276, member: 15054"] When you jam and remove the markered case how long are the Jam marks ? For my rifles the marks are usually .030" long. So seating the bullet .030" deeper leaves ZERO marks on a colored bullet. If I seat .025" from jam I just touch the rifling and get marks on the bullet of course about .005" long. .005" off the lands has worked well for me and many rifles but then there are those bullets that like to jump .060" or more. I had some Bergers that did not group well until I set them to jump a long ways like that. Just boils down to experimenting. I assume a lot of that bullet bearing surface is in the case. Sometimes I can find a sweet spot when the boat tail is just past the bottom of the neck. Still it boils down try and see what your rifle likes. [/QUOTE]
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Interesting COAL/O-Give #'s in my .300 PRC
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