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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
what caliber is a 6.5mm bullet in a 308 win case?
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<blockquote data-quote="7magcreedmoor" data-source="post: 896059" data-attributes="member: 48559"><p>I thought you might appreciate this comparison: I shoot the same 140VLD Berger in both 6.5 Creedmoor (25.5 inch barrel, varmint contour) and 6.5/284Norma (26 inch heavy varmint). The loads I settled on for best accuracy run 2735fps in the Creed and 2870fps in the Norma. Each can go faster, I saw 2850 out of the smaller case, and had the 6.5/284 up to 3050 using Retumbo, but the groups were getting loose at those speeds. The 6.5/284 is built on a long action savage (111) because those long VLDs usually don't fit in the magazine of a short bolt action without stuffing them WAY deep into the case. At 1000ft altitude/55degrees, the 6.5/284 carries 1000ft/lb to 800 yards, with a drop of 17.3moa and 10mph wind drift of 4.6moa. The little Creedmoor carries 900ft/lb with a drop of 19.2moa and wind of 5.0 moa to the same distance (200yd zero). For the purpose you described in your original question, either cartridge will do what you want, but the Creedmoor will be cheaper to feed and the barrel will last a lot longer especially compared to the Norma run at full throttle. Either way you are gonna have fun!</p></blockquote><p></p>
[QUOTE="7magcreedmoor, post: 896059, member: 48559"] I thought you might appreciate this comparison: I shoot the same 140VLD Berger in both 6.5 Creedmoor (25.5 inch barrel, varmint contour) and 6.5/284Norma (26 inch heavy varmint). The loads I settled on for best accuracy run 2735fps in the Creed and 2870fps in the Norma. Each can go faster, I saw 2850 out of the smaller case, and had the 6.5/284 up to 3050 using Retumbo, but the groups were getting loose at those speeds. The 6.5/284 is built on a long action savage (111) because those long VLDs usually don't fit in the magazine of a short bolt action without stuffing them WAY deep into the case. At 1000ft altitude/55degrees, the 6.5/284 carries 1000ft/lb to 800 yards, with a drop of 17.3moa and 10mph wind drift of 4.6moa. The little Creedmoor carries 900ft/lb with a drop of 19.2moa and wind of 5.0 moa to the same distance (200yd zero). For the purpose you described in your original question, either cartridge will do what you want, but the Creedmoor will be cheaper to feed and the barrel will last a lot longer especially compared to the Norma run at full throttle. Either way you are gonna have fun! [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
what caliber is a 6.5mm bullet in a 308 win case?
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