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Rifles, Reloading, Optics, Equipment
Reloading
Sinclair Press & Harrell powder measure
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<blockquote data-quote="boomtube" data-source="post: 889050" data-attributes="member: 9215"><p>"...<em>he only neck sizes his cartridges</em> ..."</p><p> </p><p>So what, the question is does it improve his accuracy and that depends on his rig. IF he - and you - have a custom chember that limits case expansion then hand dies under an arbor press can cut groups maybe 10-20 thou, on average. Most factory sporter rifles shoot better with properly FL sized cases.</p><p> </p><p> </p><p><em>"...and that the powder measure was as accurate as the beam scale</em>." </p><p> </p><p>Nonsense. All powder measures are volume devices and have no idea of the weight dropped. All a BR type measure does is remove the slop/back lash from the chamber volume adjustment screw so we can return to a previous setting and be assured the chamber volume is the same. Fine powders (ball types) drop very consistanty from any measure and coarse powders (4831) don't. </p><p> </p><p>At ranges of 300 yards or less a few tenths variation are hardly detectable so few 'normal' BR competitors worry about highly precise charge weights. At longer ranges any powder variations smaller than .1 gr will usually be exceeded by normal differences in internal case volumes. IMHO.</p></blockquote><p></p>
[QUOTE="boomtube, post: 889050, member: 9215"] "...[I]he only neck sizes his cartridges[/I] ..." So what, the question is does it improve his accuracy and that depends on his rig. IF he - and you - have a custom chember that limits case expansion then hand dies under an arbor press can cut groups maybe 10-20 thou, on average. Most factory sporter rifles shoot better with properly FL sized cases. [I]"...and that the powder measure was as accurate as the beam scale[/I]." Nonsense. All powder measures are volume devices and have no idea of the weight dropped. All a BR type measure does is remove the slop/back lash from the chamber volume adjustment screw so we can return to a previous setting and be assured the chamber volume is the same. Fine powders (ball types) drop very consistanty from any measure and coarse powders (4831) don't. At ranges of 300 yards or less a few tenths variation are hardly detectable so few 'normal' BR competitors worry about highly precise charge weights. At longer ranges any powder variations smaller than .1 gr will usually be exceeded by normal differences in internal case volumes. IMHO. [/QUOTE]
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Reloading
Sinclair Press & Harrell powder measure
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