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Load Development Ruger Precision Rifle .243
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<blockquote data-quote="jdmecomber" data-source="post: 1288612" data-attributes="member: 94549"><p>So most of those heavier bullets are going to be too long for the RPR and the twist rate isn't correct for those heavier bullets. You would want a 6.5 to 7 twist</p><p>105 Berger vld hunting base to ogive .598</p><p>115 Berger vld hunting base to ogive .695 </p><p></p><p>The 115 is almost .100 longer, I already had issues getting close to the lands with the 105 and went with the AICS magazines. </p><p></p><p>example</p><p>The 115 Berger VLD would give you a 1.38 Stability at the Muzzle and a 1.18 stability at 600 yards. You shouldn't send that down range with RPR in standard conditions.</p><p></p><p>The bullets that will mimic the 105 VLD seem to be what the RPR .243 was built for.</p><p></p><p>105 vld has a better form factor by quite a bit and is also a more efficient bullet. </p><p></p><p>I haven't ran the energy numbers 115 vs 105 but I would guess on a 600 yard animal, it wouldn't make much of a difference. </p><p></p><p>If you want to do some research, I would compare some 115 vs 105 with some wind and energy calculations. </p><p></p><p>If you want to do a little more research on a little heavier bullet, maybe you could try and look for some shorter bullets with base to ogive similar to the 105 .598 ish.</p><p></p><p>My advice would be to stick with the 105.</p></blockquote><p></p>
[QUOTE="jdmecomber, post: 1288612, member: 94549"] So most of those heavier bullets are going to be too long for the RPR and the twist rate isn't correct for those heavier bullets. You would want a 6.5 to 7 twist 105 Berger vld hunting base to ogive .598 115 Berger vld hunting base to ogive .695 The 115 is almost .100 longer, I already had issues getting close to the lands with the 105 and went with the AICS magazines. example The 115 Berger VLD would give you a 1.38 Stability at the Muzzle and a 1.18 stability at 600 yards. You shouldn't send that down range with RPR in standard conditions. The bullets that will mimic the 105 VLD seem to be what the RPR .243 was built for. 105 vld has a better form factor by quite a bit and is also a more efficient bullet. I haven't ran the energy numbers 115 vs 105 but I would guess on a 600 yard animal, it wouldn't make much of a difference. If you want to do some research, I would compare some 115 vs 105 with some wind and energy calculations. If you want to do a little more research on a little heavier bullet, maybe you could try and look for some shorter bullets with base to ogive similar to the 105 .598 ish. My advice would be to stick with the 105. [/QUOTE]
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Load Development Ruger Precision Rifle .243
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