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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
260 or 6.5x55??
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<blockquote data-quote="Mikecr" data-source="post: 1230645" data-attributes="member: 1521"><p>Again, 22" is irrational for the 6.5x55.</p><p>It's difficult to describe why that is, but I'll try. </p><p></p><p>Accuracy is the ultimate power, and same accuracy at higher velocity nodes equals more power.</p><p>It was mentioned that so & so get ~2800-2850fps with 140s & short 6.5x55s.</p><p>Anyone can get this accuracy and velocity node from 6.5x47L, which uses way less powder.</p><p>The 6.5x47L would also be using faster powder for same optimum load density, it can run higher chamber pressures viably, and releasing bullets cleaner with lower muzzle pressures.</p><p>Given sufficient competence in load development and shooting -applied to both scenarios -I would bet on the 6.5x47L stomping the crap out of 6.5x55(with irrationally short barrels), especially at distances beyond 500yds</p><p>Now put a 28" barrel on the 6.5x55, and I would not bet on either until 1kyd. By then, the edge is definitely in the 6.5x55's favor. </p><p></p><p>So to summarize, you can remove the advantage of many cartridges when you choose a barrel that's too short. Doing so merely raises the advantage of smaller cartridges over your choice. And ~2850fps with a 6.5x55 is not impressive, regardless of 100yd grouping.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1230645, member: 1521"] Again, 22" is irrational for the 6.5x55. It's difficult to describe why that is, but I'll try. Accuracy is the ultimate power, and same accuracy at higher velocity nodes equals more power. It was mentioned that so & so get ~2800-2850fps with 140s & short 6.5x55s. Anyone can get this accuracy and velocity node from 6.5x47L, which uses way less powder. The 6.5x47L would also be using faster powder for same optimum load density, it can run higher chamber pressures viably, and releasing bullets cleaner with lower muzzle pressures. Given sufficient competence in load development and shooting -applied to both scenarios -I would bet on the 6.5x47L stomping the crap out of 6.5x55(with irrationally short barrels), especially at distances beyond 500yds Now put a 28" barrel on the 6.5x55, and I would not bet on either until 1kyd. By then, the edge is definitely in the 6.5x55's favor. So to summarize, you can remove the advantage of many cartridges when you choose a barrel that's too short. Doing so merely raises the advantage of smaller cartridges over your choice. And ~2850fps with a 6.5x55 is not impressive, regardless of 100yd grouping. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
260 or 6.5x55??
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