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Rifles, Reloading, Optics, Equipment
Reloading
Need help deciphering OCW test results
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<blockquote data-quote="dog caller" data-source="post: 101709" data-attributes="member: 5659"><p>I tried the OCW today with my 243. I already have a great load for this rifle using the 85 TSX and AA3100. I would like to find a better load using Varget since it is less temp. sensitive and overall more stable. All rounds were in new brass (meticulously prepped), GM210M primers, 85g TSX's and 2.661" OAL (.020 off of lands).</p><p>The measurements I am listing are from the center of the 3 shot group POI to the center of the target POA. I waited anywhere from 3 to 5 minutes between shots and fired 2 barrel fouling shots before beginning my test </p><p></p><p>Results are:</p><p>1. 39.3g Varget 1.550" high, .975" left, 3200 fps, ES 70, SD 38</p><p>2. 39.6g Varget 1.273" high, .605" left, 3207 fps, ES 23, SD 11</p><p>3. 39.9g Varget 2.022" high, .595" left, 3238 fps, ES 55, SD 27</p><p>4. 40.2g Varget 2.065" high, .410" left, 3252 fps, ES 64, SD 34</p><p>5. 40.5g Varget 1.735" high, .250" left, 3292 fps, ES 72, SD 41</p><p></p><p> Loads 3, 4 and 5 share a common POI that is .402" center to center but their average group size is 1.097". Load 2's POI is the farthest from any of the others but was a nifty little .311" group. </p><p></p><p>Do I choose load 4 because it is the middle of the 3 loads that had the POI's closest to each other and try to tweek the seating depth to close the groups up or do I choose load 2 with the tiny little group and see if it was a fluke by trying to duplicate the group? I know that option 1 is correct but I just can't get that .311" group out of my mind. Help!</p></blockquote><p></p>
[QUOTE="dog caller, post: 101709, member: 5659"] I tried the OCW today with my 243. I already have a great load for this rifle using the 85 TSX and AA3100. I would like to find a better load using Varget since it is less temp. sensitive and overall more stable. All rounds were in new brass (meticulously prepped), GM210M primers, 85g TSX's and 2.661" OAL (.020 off of lands). The measurements I am listing are from the center of the 3 shot group POI to the center of the target POA. I waited anywhere from 3 to 5 minutes between shots and fired 2 barrel fouling shots before beginning my test Results are: 1. 39.3g Varget 1.550" high, .975" left, 3200 fps, ES 70, SD 38 2. 39.6g Varget 1.273" high, .605" left, 3207 fps, ES 23, SD 11 3. 39.9g Varget 2.022" high, .595" left, 3238 fps, ES 55, SD 27 4. 40.2g Varget 2.065" high, .410" left, 3252 fps, ES 64, SD 34 5. 40.5g Varget 1.735" high, .250" left, 3292 fps, ES 72, SD 41 Loads 3, 4 and 5 share a common POI that is .402" center to center but their average group size is 1.097". Load 2's POI is the farthest from any of the others but was a nifty little .311" group. Do I choose load 4 because it is the middle of the 3 loads that had the POI's closest to each other and try to tweek the seating depth to close the groups up or do I choose load 2 with the tiny little group and see if it was a fluke by trying to duplicate the group? I know that option 1 is correct but I just can't get that .311" group out of my mind. Help! [/QUOTE]
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Need help deciphering OCW test results
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