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Rifles, Reloading, Optics, Equipment
Reloading
procedure for measuring case volume
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<blockquote data-quote="rscott5028" data-source="post: 638286" data-attributes="member: 24624"><p>Mikecr,</p><p></p><p>I've never been in or to a match. I have my son signed up for his first 500yd clay shoot in 2 weeks. He's a good shot and I think we built a nice rifle. But, I have no idea what to expect. We are learning as we go and appreciate all the help we get here. </p><p></p><p>No brass was culled as yet. These were 50 random cases from the first box of 100 that were used for load development and this was the 4th firing. I have another 250 pieces that have been fire formed and ready for prep/sort/culling. </p><p></p><p>Brass prep was as follows: </p><p>- load and shoot with no prep</p><p>- partial neck size with Redding Type-S just more than bullet bearing surface and (.002" below cal) </p><p>- trim to 1.555" using Wilson trimmer</p><p>- inside neck chamfer with K&M</p><p>- outside neck chamfer</p><p>- steel wool case mouth with hand drill</p><p>- flash hole and primer pocket uniform with K&M</p><p>- seat CCI BR4 primers with forster co-ax</p><p>- 30.20 grains Varget</p><p>- sort and group bullet ogive to boat tail by .010" buckets</p><p>- weight sort and group bullet buckets by .04 grains</p><p>- seat bullets with Wilson micrometer seater</p><p></p><p>Wind was light but variable. Sometimes R2L and sometimes L2R. Technique was to wait for wind flags to be consistent. If wait seemed too long, then he held off to compensate. All groups were sub-MOA @ 500yds. Most were under 2". </p><p></p><p>Most of the groups were just shooting for group size to evaluate the rifle/ammo. But, he did go ahead and dial mid way through to achieve POA/POI. That is going to be a huge challenge if he can't spot his own shots as this match doesn't allow spotters. </p><p></p><p>See table below including empty case Wt. </p><p>Note: MV in 4th column and MV stats per string to the right. </p><p>I left the chrony in the other car and didn't get MV for the last 20 in the afternoon. </p><p></p><p>[CODE]</p><p>CaseWt Case+H2O-Wt H2O Wt MV Mean-MV Stdev-MV ES-MV</p><p>127.34 165.56 38.22 2687 </p><p>126.80 165.14 38.34 2734 2710.5 33.2 47.0</p><p>126.92 165.34 38.42 2738 </p><p>125.52 164.10 38.58 2734 </p><p>126.60 165.20 38.60 2726 2732.7 6.11 12</p><p>126.94 165.54 38.60 2730 </p><p>127.22 165.82 38.60 2726 </p><p>126.94 165.56 38.62 2722 </p><p>127.24 165.86 38.62 2726 </p><p>126.84 165.50 38.66 2727 2726.2 2.86 8</p><p>126.50 165.18 38.68 2764 </p><p>125.98 164.70 38.72 2766 </p><p>126.82 165.54 38.72 2764 </p><p>126.38 165.12 38.74 2765 </p><p>127.12 165.86 38.74 2744 2760.6 9.32 22</p><p>125.90 164.66 38.76 2760 </p><p>127.04 165.82 38.78 2763 </p><p>127.34 166.12 38.78 2761 </p><p>126.22 165.04 38.82 2764 </p><p>127.52 166.34 38.82 2758 2761.2 2.39 6</p><p>126.08 164.92 38.84 2759 </p><p>126.96 165.86 38.90 2754 </p><p>127.06 165.98 38.92 2765 </p><p>127.48 166.42 38.94 2761 </p><p>126.68 165.62 38.94 2763 2760.4 4.22 11</p><p>126.86 165.82 38.96 2768 </p><p>125.88 164.84 38.96 2777 </p><p>126.60 165.56 38.96 2771 </p><p>126.88 165.84 38.96 2768 </p><p>126.06 165.04 38.98 2784 2773.6 6.88 16</p><p>126.40 165.38 38.98 </p><p>126.26 165.24 38.98 </p><p>127.04 166.04 39.00 </p><p>126.96 166.00 39.04 </p><p>126.56 165.62 39.06 </p><p>126.26 165.34 39.08 </p><p>126.86 165.94 39.08 </p><p>126.88 165.98 39.10 </p><p>126.86 165.96 39.10 </p><p>126.86 165.98 39.12 </p><p>126.34 165.48 39.14 </p><p>125.24 164.38 39.14 </p><p>125.98 165.12 39.14 </p><p>126.70 165.86 39.16 </p><p>125.96 165.14 39.18 </p><p>126.74 165.92 39.18 </p><p>125.72 164.92 39.20 </p><p>126.60 165.82 39.22 </p><p>125.90 165.16 39.26 </p><p>125.98 165.26 39.28 </p><p>126.60 165.49 38.89 mean </p><p>0.53 0.49 0.25 s </p><p>125.24 164.10 38.22 min </p><p>127.52 166.42 39.28 max </p><p>2.28 2.32 1.06 range </p><p>[/CODE]</p></blockquote><p></p>
[QUOTE="rscott5028, post: 638286, member: 24624"] Mikecr, I've never been in or to a match. I have my son signed up for his first 500yd clay shoot in 2 weeks. He's a good shot and I think we built a nice rifle. But, I have no idea what to expect. We are learning as we go and appreciate all the help we get here. No brass was culled as yet. These were 50 random cases from the first box of 100 that were used for load development and this was the 4th firing. I have another 250 pieces that have been fire formed and ready for prep/sort/culling. Brass prep was as follows: - load and shoot with no prep - partial neck size with Redding Type-S just more than bullet bearing surface and (.002" below cal) - trim to 1.555" using Wilson trimmer - inside neck chamfer with K&M - outside neck chamfer - steel wool case mouth with hand drill - flash hole and primer pocket uniform with K&M - seat CCI BR4 primers with forster co-ax - 30.20 grains Varget - sort and group bullet ogive to boat tail by .010" buckets - weight sort and group bullet buckets by .04 grains - seat bullets with Wilson micrometer seater Wind was light but variable. Sometimes R2L and sometimes L2R. Technique was to wait for wind flags to be consistent. If wait seemed too long, then he held off to compensate. All groups were sub-MOA @ 500yds. Most were under 2". Most of the groups were just shooting for group size to evaluate the rifle/ammo. But, he did go ahead and dial mid way through to achieve POA/POI. That is going to be a huge challenge if he can't spot his own shots as this match doesn't allow spotters. See table below including empty case Wt. Note: MV in 4th column and MV stats per string to the right. I left the chrony in the other car and didn't get MV for the last 20 in the afternoon. [CODE] CaseWt Case+H2O-Wt H2O Wt MV Mean-MV Stdev-MV ES-MV 127.34 165.56 38.22 2687 126.80 165.14 38.34 2734 2710.5 33.2 47.0 126.92 165.34 38.42 2738 125.52 164.10 38.58 2734 126.60 165.20 38.60 2726 2732.7 6.11 12 126.94 165.54 38.60 2730 127.22 165.82 38.60 2726 126.94 165.56 38.62 2722 127.24 165.86 38.62 2726 126.84 165.50 38.66 2727 2726.2 2.86 8 126.50 165.18 38.68 2764 125.98 164.70 38.72 2766 126.82 165.54 38.72 2764 126.38 165.12 38.74 2765 127.12 165.86 38.74 2744 2760.6 9.32 22 125.90 164.66 38.76 2760 127.04 165.82 38.78 2763 127.34 166.12 38.78 2761 126.22 165.04 38.82 2764 127.52 166.34 38.82 2758 2761.2 2.39 6 126.08 164.92 38.84 2759 126.96 165.86 38.90 2754 127.06 165.98 38.92 2765 127.48 166.42 38.94 2761 126.68 165.62 38.94 2763 2760.4 4.22 11 126.86 165.82 38.96 2768 125.88 164.84 38.96 2777 126.60 165.56 38.96 2771 126.88 165.84 38.96 2768 126.06 165.04 38.98 2784 2773.6 6.88 16 126.40 165.38 38.98 126.26 165.24 38.98 127.04 166.04 39.00 126.96 166.00 39.04 126.56 165.62 39.06 126.26 165.34 39.08 126.86 165.94 39.08 126.88 165.98 39.10 126.86 165.96 39.10 126.86 165.98 39.12 126.34 165.48 39.14 125.24 164.38 39.14 125.98 165.12 39.14 126.70 165.86 39.16 125.96 165.14 39.18 126.74 165.92 39.18 125.72 164.92 39.20 126.60 165.82 39.22 125.90 165.16 39.26 125.98 165.26 39.28 126.60 165.49 38.89 mean 0.53 0.49 0.25 s 125.24 164.10 38.22 min 127.52 166.42 39.28 max 2.28 2.32 1.06 range [/CODE] [/QUOTE]
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Reloading
procedure for measuring case volume
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