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Rifles, Reloading, Optics, Equipment
Reloading
Odd Groups
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<blockquote data-quote="Alaska2006" data-source="post: 1242296" data-attributes="member: 92741"><p>Question for the expert shooters/reloaders</p><p></p><p>Im dealing with a 300 WM that after some pains is shooting like a house a fire. Consistent groups under 0.390 at 100 yrds.</p><p>Here's what I have: running H1000 in both loads, using Fed large mag 215 primers in both loads, Norma brass both loads, (same lot powder & primers)</p><p>My Berger 215 Hybrid are running MV of 3,028 on average ( that is > 40 shots across the lab radar) dead on POI at 100 yrds </p><p>My Berger 230 OTM are running 2,827 on average (> 25 shots across the lab radar)</p><p></p><p>Both group amazingly.... except the 230s point of impact is .750 high and .500 left from the POI with the 215 Bergers.</p><p></p><p>Why do the 230's impact higher with lower MV at 100 yrds and why 1/2" left? I have shot series of 215s then 230s then back to 215s and back to 230s. confirming the grouping remains good and POI is changing between the two loads. same environmental conditions. </p><p>Today:</p><p>55 degrees, 24.77 Baro pressure, 5,147' elevation. same odd change in POI between the two loads.</p></blockquote><p></p>
[QUOTE="Alaska2006, post: 1242296, member: 92741"] Question for the expert shooters/reloaders Im dealing with a 300 WM that after some pains is shooting like a house a fire. Consistent groups under 0.390 at 100 yrds. Here's what I have: running H1000 in both loads, using Fed large mag 215 primers in both loads, Norma brass both loads, (same lot powder & primers) My Berger 215 Hybrid are running MV of 3,028 on average ( that is > 40 shots across the lab radar) dead on POI at 100 yrds My Berger 230 OTM are running 2,827 on average (> 25 shots across the lab radar) Both group amazingly.... except the 230s point of impact is .750 high and .500 left from the POI with the 215 Bergers. Why do the 230's impact higher with lower MV at 100 yrds and why 1/2" left? I have shot series of 215s then 230s then back to 215s and back to 230s. confirming the grouping remains good and POI is changing between the two loads. same environmental conditions. Today: 55 degrees, 24.77 Baro pressure, 5,147' elevation. same odd change in POI between the two loads. [/QUOTE]
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