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Rifles, Reloading, Optics, Equipment
Gunsmithing
Point of impact drift
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<blockquote data-quote="Gunpoor" data-source="post: 865693" data-attributes="member: 8358"><p>With the 140 grain bullet from a 260Rem you are getting somewhat low muzzle velocity compared to some of the bigger cased 6.5 cartridges and therefore the bullets are slowing quicker also, so I think spin drift is more the culprit than scope cant. You didn't say what rifle/barrel you are using but if it is an off the shelf rifle the rate of twist may be too slow to keep the RPMs high enough at longer ranges. I bought a rifle for my daughter some years back and wanted a 260 but shied away from it because of the slow twist and opted for a 7mm08 instead. I like the cartridge but I think the rifles should be made with 1/8" ROT barrel. If you are using a custom barrel with a faster ROT disregard my ramblings.</p></blockquote><p></p>
[QUOTE="Gunpoor, post: 865693, member: 8358"] With the 140 grain bullet from a 260Rem you are getting somewhat low muzzle velocity compared to some of the bigger cased 6.5 cartridges and therefore the bullets are slowing quicker also, so I think spin drift is more the culprit than scope cant. You didn't say what rifle/barrel you are using but if it is an off the shelf rifle the rate of twist may be too slow to keep the RPMs high enough at longer ranges. I bought a rifle for my daughter some years back and wanted a 260 but shied away from it because of the slow twist and opted for a 7mm08 instead. I like the cartridge but I think the rifles should be made with 1/8" ROT barrel. If you are using a custom barrel with a faster ROT disregard my ramblings. [/QUOTE]
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Point of impact drift
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