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The Range
Ammo & Reloading
PPU matchline ammo 7.62x54
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<blockquote data-quote="OKBPS" data-source="post: 3336375" data-attributes="member: 45455"><p>A couple more measurement i found very useful is Neck ID and Neck OD.</p><p>I found if the ID is off .0005 on pulled rounds that that round will likely open the group.</p><p></p><p>I already resized and chamfered the pulled cases to reload them but the ID is pretty consistent at .3055 and the OD is .3255 to .326. Neck thickness is steady at .011 to .0115 so that math doesn't quit work. I will use the factory bullets to see what difference I get if any by using the recipe that I plan on shooting. I did not measure when I pulled the bullets but have more I can do later. The standard ammo cases I fired will be used to create a load to shoot competition with my bullets. I plan to chamfer only the first time, I always brush the necks, and then add one other step each time to see what it does to my group. I will use the steel wool as well just because that makes sense to me and I could feel the roughness on the inside.</p><p></p><p>Still learning a lot of this so I appreciate the tips.</p></blockquote><p></p>
[QUOTE="OKBPS, post: 3336375, member: 45455"] A couple more measurement i found very useful is Neck ID and Neck OD. I found if the ID is off .0005 on pulled rounds that that round will likely open the group. I already resized and chamfered the pulled cases to reload them but the ID is pretty consistent at .3055 and the OD is .3255 to .326. Neck thickness is steady at .011 to .0115 so that math doesn't quit work. I will use the factory bullets to see what difference I get if any by using the recipe that I plan on shooting. I did not measure when I pulled the bullets but have more I can do later. The standard ammo cases I fired will be used to create a load to shoot competition with my bullets. I plan to chamfer only the first time, I always brush the necks, and then add one other step each time to see what it does to my group. I will use the steel wool as well just because that makes sense to me and I could feel the roughness on the inside. Still learning a lot of this so I appreciate the tips. [/QUOTE]
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