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Rifles, Reloading, Optics, Equipment
Reloading
Buddy needs help with 300 RUM.
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<blockquote data-quote="J E Custom" data-source="post: 1763602" data-attributes="member: 2736"><p>Sounds like it is close to SAMMI spec. Free bore and throat are your friend with the big over bore cartridges, and in order to get the velocities necessary. The Weatherbys have much more than the RUM's because of the velocities and the amount of powder used in the Weatherbys.</p><p></p><p>All barrels like certain Bullets and it sounds like this is the case here. Have him try other brands and weights to find the right bullet for the barrel. The 300 rums like 180 to 200 grain bullets normally depending on the twist. I own several RUMS and mine like the Nosler bullets best. The Accubonds seem to be the most consistent in accuracy and performance. some like the partition because of the bullet body length.</p><p></p><p>The Sierra match shoot the best but are that good for hunting. There are many other things that can cause this and evaluation of the group shape will help. If the group Is stringing the shots vertically, it is probably the SDs And the velocity is up and down.</p><p>If it is stringing them horizontally it is bedding or trigger control normally.</p><p></p><p>If i have good SDs and poor accuracy, It is normally the bullet weight or/and style.</p><p></p><p>Hope this helps</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1763602, member: 2736"] Sounds like it is close to SAMMI spec. Free bore and throat are your friend with the big over bore cartridges, and in order to get the velocities necessary. The Weatherbys have much more than the RUM's because of the velocities and the amount of powder used in the Weatherbys. All barrels like certain Bullets and it sounds like this is the case here. Have him try other brands and weights to find the right bullet for the barrel. The 300 rums like 180 to 200 grain bullets normally depending on the twist. I own several RUMS and mine like the Nosler bullets best. The Accubonds seem to be the most consistent in accuracy and performance. some like the partition because of the bullet body length. The Sierra match shoot the best but are that good for hunting. There are many other things that can cause this and evaluation of the group shape will help. If the group Is stringing the shots vertically, it is probably the SDs And the velocity is up and down. If it is stringing them horizontally it is bedding or trigger control normally. If i have good SDs and poor accuracy, It is normally the bullet weight or/and style. Hope this helps J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Buddy needs help with 300 RUM.
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