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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6mm Rem or ???
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<blockquote data-quote="tim_w" data-source="post: 1444288" data-attributes="member: 11132"><p>All depends on what the max COAL you have planned. As you only plan on one bullet the extra long neck of the 6 Rem is not giving that much as it does when you plan to use many different bullet types. But it does allow for getting the bullet out of the normal powder column without sacrificing neck bearing surface contact. With that said if you are working with a receiver mag combo that offers plenty OAL then it would be my pick. </p><p></p><p>If you really are only using one bullet then I would get it throated with the bt/bearing above the neck shoulder junc some min distance. With its long neck you still have plenty of bearing surface neck contract to chase the lands if needed; again COAL restriction being taken into account. I think you would be looking at a COAL around 3.05-3.1 keeping the one junction above the other. Take that and sett the freebore allowing for the 20 tthou jump them seem to like.</p><p></p><p>I think its a great idea to use the h1000 as it one of the coolest temp powders in that range and should lead to longer throat life as well is known to produce very consistent loads. Loading long if possible will allow a given peak vel at lower peak psi which again should add to increased throat life. The hybrids seem to like about .020 jump so I would factor that into the freebore spec.</p><p></p><p>If this is for hunting have you considered the 103/108 ELD bullets. Also, just an FYI, unless you are going to be shooting at elevation with the 115 bergers it needs a fast twist; 1:7 ideal, as you likely already know.</p></blockquote><p></p>
[QUOTE="tim_w, post: 1444288, member: 11132"] All depends on what the max COAL you have planned. As you only plan on one bullet the extra long neck of the 6 Rem is not giving that much as it does when you plan to use many different bullet types. But it does allow for getting the bullet out of the normal powder column without sacrificing neck bearing surface contact. With that said if you are working with a receiver mag combo that offers plenty OAL then it would be my pick. If you really are only using one bullet then I would get it throated with the bt/bearing above the neck shoulder junc some min distance. With its long neck you still have plenty of bearing surface neck contract to chase the lands if needed; again COAL restriction being taken into account. I think you would be looking at a COAL around 3.05-3.1 keeping the one junction above the other. Take that and sett the freebore allowing for the 20 tthou jump them seem to like. I think its a great idea to use the h1000 as it one of the coolest temp powders in that range and should lead to longer throat life as well is known to produce very consistent loads. Loading long if possible will allow a given peak vel at lower peak psi which again should add to increased throat life. The hybrids seem to like about .020 jump so I would factor that into the freebore spec. If this is for hunting have you considered the 103/108 ELD bullets. Also, just an FYI, unless you are going to be shooting at elevation with the 115 bergers it needs a fast twist; 1:7 ideal, as you likely already know. [/QUOTE]
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6mm Rem or ???
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