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Rifles, Reloading, Optics, Equipment
Reloading
Choice of long range test loads based on overall group size or vertical group size?
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<blockquote data-quote="KiloTango" data-source="post: 835333" data-attributes="member: 64678"><p>Custom Rem700 build</p><p>6.5x47 Lapua</p><p>24" Bartlien 1in8 twist 5R</p><p>130gr Berger VLD</p><p>H4350</p><p>Fed 205M</p><p>COAL 2.800" to fit in magazine. This puts the bullets 0.010" off the lands.</p><p>I have been working up loads for this gun. It shows no pressure signs even with loads over listed max, but the loads start to compress and the point of impact shifts dramatically from the non-compressed loads, so I decided to stay away from the compressed loads.</p><p>Consider two loads:</p><p>39.0gr of H4350 yielded my best group of my life at 100 yards of 0.191" center to center measured for overall group size. This group had a vertical measurement of 0.169". The normal group size for this load is just under 0.330", with multiple groups of 0.329" and 0.328". It is very consistent. The vertical measurements are also very similar, always under 0.200".</p><p>The next load I have only tested just today. It was just a whim to try 39.1gr. Measured traditionally, it is a 0.389" group. However, the vertical measured just 0.045"!</p><p>I think I attached pics of the groups. First should be the 0.191", second should be the 39.1gr group with the small vertical, and the third is a more usual 39.0gr group.</p><p>I have not had access to a range with more than 100 yards, but will get to shoot at 300 and maybe 600 next week. Time and components are limited. Which would you load up?</p><p>Thanks,</p><p>Ken</p></blockquote><p></p>
[QUOTE="KiloTango, post: 835333, member: 64678"] Custom Rem700 build 6.5x47 Lapua 24" Bartlien 1in8 twist 5R 130gr Berger VLD H4350 Fed 205M COAL 2.800" to fit in magazine. This puts the bullets 0.010" off the lands. I have been working up loads for this gun. It shows no pressure signs even with loads over listed max, but the loads start to compress and the point of impact shifts dramatically from the non-compressed loads, so I decided to stay away from the compressed loads. Consider two loads: 39.0gr of H4350 yielded my best group of my life at 100 yards of 0.191" center to center measured for overall group size. This group had a vertical measurement of 0.169". The normal group size for this load is just under 0.330", with multiple groups of 0.329" and 0.328". It is very consistent. The vertical measurements are also very similar, always under 0.200". The next load I have only tested just today. It was just a whim to try 39.1gr. Measured traditionally, it is a 0.389" group. However, the vertical measured just 0.045"! I think I attached pics of the groups. First should be the 0.191", second should be the 39.1gr group with the small vertical, and the third is a more usual 39.0gr group. I have not had access to a range with more than 100 yards, but will get to shoot at 300 and maybe 600 next week. Time and components are limited. Which would you load up? Thanks, Ken [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Choice of long range test loads based on overall group size or vertical group size?
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