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5-Round groups
69 gr RMR bullets |
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Load #1 |
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N140 21.1 gr 2.300 1.747 2649 fps 36236 psi 1.361 exit time 80/82 deg |
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0.302 |
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.323 group was with the cold barrel - also not having shot this rifle in a while |
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0.287 |
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0.206 |
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0.323 |
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Average |
0.280 |
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Median |
0.295 |
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Std Deviation |
0.051 |
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Load #2 |
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N140 21.1 gr 2.303 1.745 2649 fps 36238 psi 1.361 exit time 82/84 deg |
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0.263 |
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Barrel heating probably messed up the last group - over 128 degs. |
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0.285 |
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0.295 |
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0.368 |
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Average |
0.303 |
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Median |
0.290 |
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Std Deviation |
0.046 |
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Load #3 |
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N140 21.1 gr 2.303 1.744 2649 fps 36266 psi 1.361 exit time 84/88 deg |
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0.245 |
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Let the barrel cool after the third group. |
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0.213 |
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0.312 |
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0.251 |
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Average |
0.255 |
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Median |
0.248 |
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Std Deviation |
0.041 |
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All 3 loads |
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Average |
0.279 |
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Median |
0.286 |
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Std Deviation |
0.046 |
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