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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
168 Gr. Barnes XLC Bullet test
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<blockquote data-quote="Luke Mason" data-source="post: 23200" data-attributes="member: 912"><p>Guys,</p><p> I recently spoke with the owner of Swift Bullets; he is a long range hunter/precision shooter. </p><p></p><p>During our conversation, I asked him about performance differences with the Scirocco.</p><p></p><p>This may all be basic info to some however, I thought this may help. </p><p></p><p>He suggested the following:</p><p>1)Find what he referred to as the velocity "sweet spot". He said that from his experience there is a high velocity, and low velocity that the rounds like to work in. </p><p></p><p>He also said that if your using a velocity that is somewhere in the middle of this range, that you'll have the problems your having. His suggestion was to either slightly increase or decrease your velocity by 50-75fps, and increase in these increments until groups tighten. He typically works his loads in the lower sweet spot for overpressure reasons, however if your V is already in the conservative range, then perhaps boosting it a bit would get you in the zone.</p><p></p><p> He boost or lowers his V until it tack drives, and then goes a bit more to see if it tightens further. If it starts to spread, which he said it eventually will, he simply comes back to where it last printed best.</p><p></p><p>2) Once you have locked into the sweet spot, his next suggestion was to work with the different powders that are suggested in the Swift manual (they list 9 different powders). He said that from his experience(as a hunter/precision rifleman), that one powder will throw rounds into wild spreads, and that others will bring the group where you want them.</p><p></p><p>3)The last thing he suggested, was to vary you seating depths. He is using .015, on his personnel 7mag. I think your rat-tail idea is a good one. Hopefully this will allow you to have the freebore that your wanting.</p><p></p><p>Hope this helps someone.</p></blockquote><p></p>
[QUOTE="Luke Mason, post: 23200, member: 912"] Guys, I recently spoke with the owner of Swift Bullets; he is a long range hunter/precision shooter. During our conversation, I asked him about performance differences with the Scirocco. This may all be basic info to some however, I thought this may help. He suggested the following: 1)Find what he referred to as the velocity "sweet spot". He said that from his experience there is a high velocity, and low velocity that the rounds like to work in. He also said that if your using a velocity that is somewhere in the middle of this range, that you'll have the problems your having. His suggestion was to either slightly increase or decrease your velocity by 50-75fps, and increase in these increments until groups tighten. He typically works his loads in the lower sweet spot for overpressure reasons, however if your V is already in the conservative range, then perhaps boosting it a bit would get you in the zone. He boost or lowers his V until it tack drives, and then goes a bit more to see if it tightens further. If it starts to spread, which he said it eventually will, he simply comes back to where it last printed best. 2) Once you have locked into the sweet spot, his next suggestion was to work with the different powders that are suggested in the Swift manual (they list 9 different powders). He said that from his experience(as a hunter/precision rifleman), that one powder will throw rounds into wild spreads, and that others will bring the group where you want them. 3)The last thing he suggested, was to vary you seating depths. He is using .015, on his personnel 7mag. I think your rat-tail idea is a good one. Hopefully this will allow you to have the freebore that your wanting. Hope this helps someone. [/QUOTE]
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168 Gr. Barnes XLC Bullet test
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