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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Heavy hunting bullet for 10 twist, 26", 300RUM?
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<blockquote data-quote="Jon A" data-source="post: 156271" data-attributes="member: 319"><p><strong>Re: Heavy hunting bullet for 10 twist, 26\", 300RUM?</strong></p><p></p><p>The 240 just doesn't have a shape as efficient as the more modern VLD's. The pudgy 6 caliber (if that) tangent ogive makes the various 210's, the ULD's I've shot from Richard, etc, with their sharp secant ogives look to have relative needlepoints in comparison. There really isn't a reason it should be higher; the only reason it's that high is because of it's weight. Sierra's data on this bullet is very old, I'd be surprized if they came up with the same numbers if they tested it today as I know they've changed some of their proceedures. </p><p></p><p>In any case, if it really had a BC that high it would beat the various 210's pretty soundly. The simple fact is, it doesn't.</p><p></p><p>But like I said, I still like it. That pudgy nose helps it work in 1:10 twists, makes it very easy to find an accurate load with (not picky about seating depth) and that extra weight is put to good use terminally.</p><p></p><p>On the Nosler brass, I haven't worn any out yet but I haven't loaded any one case more than three times or so I think so far so I can't give you anything definitive. It will show ejector marks as you get up there roughly as quickly as Rem brass. Even if the pockets do stay tighter a bit longer it doesn't seem to me like it's going to handle significantly higher pressures well enough to be much of an advantage. The main thing I like about it is it all weighs the same, the neck thickness is so much more consistent, etc.</p></blockquote><p></p>
[QUOTE="Jon A, post: 156271, member: 319"] [b]Re: Heavy hunting bullet for 10 twist, 26\", 300RUM?[/b] The 240 just doesn't have a shape as efficient as the more modern VLD's. The pudgy 6 caliber (if that) tangent ogive makes the various 210's, the ULD's I've shot from Richard, etc, with their sharp secant ogives look to have relative needlepoints in comparison. There really isn't a reason it should be higher; the only reason it's that high is because of it's weight. Sierra's data on this bullet is very old, I'd be surprized if they came up with the same numbers if they tested it today as I know they've changed some of their proceedures. In any case, if it really had a BC that high it would beat the various 210's pretty soundly. The simple fact is, it doesn't. But like I said, I still like it. That pudgy nose helps it work in 1:10 twists, makes it very easy to find an accurate load with (not picky about seating depth) and that extra weight is put to good use terminally. On the Nosler brass, I haven't worn any out yet but I haven't loaded any one case more than three times or so I think so far so I can't give you anything definitive. It will show ejector marks as you get up there roughly as quickly as Rem brass. Even if the pockets do stay tighter a bit longer it doesn't seem to me like it's going to handle significantly higher pressures well enough to be much of an advantage. The main thing I like about it is it all weighs the same, the neck thickness is so much more consistent, etc. [/QUOTE]
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Heavy hunting bullet for 10 twist, 26", 300RUM?
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