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Rifles, Reloading, Optics, Equipment
Reloading
Determining neck bushing size for die
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<blockquote data-quote="elktaker" data-source="post: 1108089" data-attributes="member: 86786"><p>Okay here are some results. </p><p></p><p>Used a .311 bushing to size approximately 85-90% of the neck and outside neck turned all my old brass necks to .0145 some were a little thicker but most were close to .0145.</p><p>I bumped the shoulders back .001 or .002 depending on previous load/brass to fit chamber.</p><p></p><p>I scored a few pounds of magpro so decide to switch away from Norma MRP.</p><p></p><p>First I shot 2 sighters then shoot 4 shoot groups with 2 minutes between each group. I had enough brass to load the following:</p><p></p><p>Group 1 64.9gr</p><p>.969 MOA</p><p>offset .095"L and .741"high</p><p></p><p>Group 2 65.4</p><p>1.1 MOA</p><p>offset .89L and .83 high</p><p></p><p>Group 3 65.9</p><p>.596 MOA</p><p>offset 1.075L and .44 high</p><p></p><p>Group 4 66.4</p><p>1.742 MOA</p><p>offset .019L and .263 high</p><p></p><p>Group 5 66.9</p><p>1.096 MOA</p><p>offset .749L and .569 high</p><p></p><p></p><p></p><p>Groups 2 3 and 5 have relatively close distance from point of aims. I believe my next step is to load 5 shot groups of:</p><p></p><p>65.5 </p><p>65.7</p><p>65.9</p><p>66.1</p><p></p><p>To locate where the group the point of aim shifts between Group 3 and 4?</p><p></p><p>Groups were shot off of a new bald eagle front rest and rear bag of bench. Slight wind to the right 7 to 10 mph and 80 degrees. I typical like shooting groups that vary by .3 gr but brass dictated .5gr.</p></blockquote><p></p>
[QUOTE="elktaker, post: 1108089, member: 86786"] Okay here are some results. Used a .311 bushing to size approximately 85-90% of the neck and outside neck turned all my old brass necks to .0145 some were a little thicker but most were close to .0145. I bumped the shoulders back .001 or .002 depending on previous load/brass to fit chamber. I scored a few pounds of magpro so decide to switch away from Norma MRP. First I shot 2 sighters then shoot 4 shoot groups with 2 minutes between each group. I had enough brass to load the following: Group 1 64.9gr .969 MOA offset .095"L and .741"high Group 2 65.4 1.1 MOA offset .89L and .83 high Group 3 65.9 .596 MOA offset 1.075L and .44 high Group 4 66.4 1.742 MOA offset .019L and .263 high Group 5 66.9 1.096 MOA offset .749L and .569 high Groups 2 3 and 5 have relatively close distance from point of aims. I believe my next step is to load 5 shot groups of: 65.5 65.7 65.9 66.1 To locate where the group the point of aim shifts between Group 3 and 4? Groups were shot off of a new bald eagle front rest and rear bag of bench. Slight wind to the right 7 to 10 mph and 80 degrees. I typical like shooting groups that vary by .3 gr but brass dictated .5gr. [/QUOTE]
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Determining neck bushing size for die
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