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Rifles, Reloading, Optics, Equipment
Reloading
Vihtavuori N570 in 7mm Rem Mag
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<blockquote data-quote="Deezel" data-source="post: 1674616" data-attributes="member: 74199"><p>Did some seat testing on the 69.1gr load. Results were what I hoped it would be.</p><p></p><p>Loaded 6 rounds each with bullet seated 0.130", 0.090", 0.050" off and 6 more that were just touching lands.</p><p>I got what I feel is a typical result with this bullet. The farther away it got from the lands, the bigger the group got.</p><p>The loads touching the lands held a group of 0.36" and the group at 0.050" off had opened up to 0.968". Noticeable pressure spike (harder rifle kick) with the 0.090" jump and did get a faint ejector wipe with one of the rounds with the 0.130" jump. Neither of these 2 loads grouped well. Both were well over 1". These groups were shot at 100 yards.</p><p></p><p>Fired the last 3 rounds that were loaded touching the lands at 600 yards. First 2 shots stacked then last one drifted up and left a wee bit. I think the pressure got to me...... <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p><img src="https://i.imgur.com/FEcjmd9.jpg?1" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Here's a pic of the rifle at my range. The little black box on the back side of the rifle is a battery operated air mattress pump. If you look you can see the hose running into the chamber. This works amazingly well for cooling the barrel between shots.</p><p><img src="https://i.imgur.com/Rd44k7Y.jpg?1" alt="" class="fr-fic fr-dii fr-draggable " style="" /> </p><p></p><p>I'm pretty sure I'm finished with this load development. I'll most likely continue shooting the 69.1gr load and seat the bullets 0.005" off the lands. I will have to try the 66.9gr load with bullets seated 0.005" off just to see how it shoots. Who knows, it may perform better. </p><p>All in all, I'm pretty happy with how this has turned out. I'm also very impressed with the speed I'm getting with this powder. I honestly thought I'd end up somewhere around 2975fps, not 3050fps.</p></blockquote><p></p>
[QUOTE="Deezel, post: 1674616, member: 74199"] Did some seat testing on the 69.1gr load. Results were what I hoped it would be. Loaded 6 rounds each with bullet seated 0.130", 0.090", 0.050" off and 6 more that were just touching lands. I got what I feel is a typical result with this bullet. The farther away it got from the lands, the bigger the group got. The loads touching the lands held a group of 0.36" and the group at 0.050" off had opened up to 0.968". Noticeable pressure spike (harder rifle kick) with the 0.090" jump and did get a faint ejector wipe with one of the rounds with the 0.130" jump. Neither of these 2 loads grouped well. Both were well over 1". These groups were shot at 100 yards. Fired the last 3 rounds that were loaded touching the lands at 600 yards. First 2 shots stacked then last one drifted up and left a wee bit. I think the pressure got to me...... :) [IMG]https://i.imgur.com/FEcjmd9.jpg?1[/IMG] Here's a pic of the rifle at my range. The little black box on the back side of the rifle is a battery operated air mattress pump. If you look you can see the hose running into the chamber. This works amazingly well for cooling the barrel between shots. [IMG]https://i.imgur.com/Rd44k7Y.jpg?1[/IMG] I'm pretty sure I'm finished with this load development. I'll most likely continue shooting the 69.1gr load and seat the bullets 0.005" off the lands. I will have to try the 66.9gr load with bullets seated 0.005" off just to see how it shoots. Who knows, it may perform better. All in all, I'm pretty happy with how this has turned out. I'm also very impressed with the speed I'm getting with this powder. I honestly thought I'd end up somewhere around 2975fps, not 3050fps. [/QUOTE]
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Vihtavuori N570 in 7mm Rem Mag
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