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Long Range Hunting & Shooting
Weatherby 6.5 RPM?
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<blockquote data-quote="Turnbolt53" data-source="post: 1727269" data-attributes="member: 108264"><p>Yes . . . downloading a big case to get the same performance as a smaller case will always use more powder.</p><p></p><p>And at equal pressures, to get more velocity you have to burn more powder. Disproportionately more. </p><p></p><p>But at equal pressures, the larger case will always be capable of greater velocity.</p><p></p><p>Those that want/need the extra velocity can choose the 6.5x300Wby, 26Nosler, 264WM, 6.5 Wby RPM, or choose lesser 6.5 SAAMI cartridges all of the way down to the 6.5 Creedmoor. It's nice to have options. </p><p></p><p>Brass cost will be surely be higher than the 6.5/06AI, but as a hunter, it wouldn't be the factor that drove me to choose one chamber versus another. And as a SAAMI cartridge, dies will be cheap.</p><p></p><p>And fireforming 6.5/06AI brass is a PITA, uses powder, primers, bullets, and wears out barrels.</p><p></p><p>For anybody wanting a cheap 6.5 Wby RPM, just get an old Savage 110, a Northland Criterion 6.5 Creedmoor barrel, and a 6.5 Wby RPM reamer and you're there.</p></blockquote><p></p>
[QUOTE="Turnbolt53, post: 1727269, member: 108264"] Yes . . . downloading a big case to get the same performance as a smaller case will always use more powder. And at equal pressures, to get more velocity you have to burn more powder. Disproportionately more. But at equal pressures, the larger case will always be capable of greater velocity. Those that want/need the extra velocity can choose the 6.5x300Wby, 26Nosler, 264WM, 6.5 Wby RPM, or choose lesser 6.5 SAAMI cartridges all of the way down to the 6.5 Creedmoor. It's nice to have options. Brass cost will be surely be higher than the 6.5/06AI, but as a hunter, it wouldn't be the factor that drove me to choose one chamber versus another. And as a SAAMI cartridge, dies will be cheap. And fireforming 6.5/06AI brass is a PITA, uses powder, primers, bullets, and wears out barrels. For anybody wanting a cheap 6.5 Wby RPM, just get an old Savage 110, a Northland Criterion 6.5 Creedmoor barrel, and a 6.5 Wby RPM reamer and you're there. [/QUOTE]
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Weatherby 6.5 RPM?
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