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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Fast Twist 270 Win vs. 6.8 Western
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<blockquote data-quote="vancewalker007" data-source="post: 2088583" data-attributes="member: 66917"><p>From what I can find to read on it, its Winchester's effort to get into the off-the-shelf rifle, factory SAAMI cartridge long range market space with a cartridge that can handle the heaviest available 270 cal bullets at reasonable velocities and still fit into most short action off-the-shelf rifles. So, its a 270 WSM refined to shoot long range bullets and fit into the typical 2.955 short action limit mags as a SAAMI cartridge. This will essentially kill the 270 WSM in the off-the-shelf rifle market. Its sort'a like comparing a <strong>SAAMI</strong> spec'd 300 Win Mag and the 300 PRC.</p><p></p><p>I would bet it will exhibit decent velocities with shorter barrels like other short-fat cartridges do like 6.5 SAUMs, WSMs, 6.5 PRC etc.</p><p></p><p>Here is some data on the new cartridge from an American Hunter article:</p><p></p><p>"What exactly is the new 6.8 Western? Well, my initial suspicions were correct; it is a shortened version of the .270 Winchester Short Magnum, designed to allow proper seating of the longer .277-inch diameter bullets in a short-action magazine. The same 35-degree shoulder is carried forward from the .270 WSM, though the datum line—the distance from the cartridge base to the shoulder—has been reduced from the .270 WSM's 1.664 inches to 1.583 inches, and the case length shortened from 2.100 inches down to 2.020 inches. According to the <a href="https://saami.org/wp-content/uploads/2020/11/6.8-Western-Public-Introduction-Orig-2020-11-01.pdf" target="_blank">SAAMI specifications</a>, the maximum cartridge overall length for the 6.8 Western is 2.955 inches"</p><p></p><p>As far as what will it do that the 7mm Rem will not? From an external ballistics standpoint and effect on game likely there is no real difference, especially in the say 0-600 yard space. It does have some obvious differences, </p><p> - Its a short fat cartridge that is SAAMI spec'd to fit nicely in a typical short actions</p><p> - It is spec'd to use a fast twist barrel to make the heavies work good</p><p> - It will likely fit into a shorter lighter rifles and still give nice external ballistics</p><p></p><p>I'll stick with my custom 6.5 PRC, but in an off the off-the-shelf rifle with some good hand loading applied this should be a great new long range hunting cartridge shooting say the Berger 170gr EOL or the Nosler 165 ABLR.</p></blockquote><p></p>
[QUOTE="vancewalker007, post: 2088583, member: 66917"] From what I can find to read on it, its Winchester's effort to get into the off-the-shelf rifle, factory SAAMI cartridge long range market space with a cartridge that can handle the heaviest available 270 cal bullets at reasonable velocities and still fit into most short action off-the-shelf rifles. So, its a 270 WSM refined to shoot long range bullets and fit into the typical 2.955 short action limit mags as a SAAMI cartridge. This will essentially kill the 270 WSM in the off-the-shelf rifle market. Its sort'a like comparing a [B]SAAMI[/B] spec'd 300 Win Mag and the 300 PRC. I would bet it will exhibit decent velocities with shorter barrels like other short-fat cartridges do like 6.5 SAUMs, WSMs, 6.5 PRC etc. Here is some data on the new cartridge from an American Hunter article: "What exactly is the new 6.8 Western? Well, my initial suspicions were correct; it is a shortened version of the .270 Winchester Short Magnum, designed to allow proper seating of the longer .277-inch diameter bullets in a short-action magazine. The same 35-degree shoulder is carried forward from the .270 WSM, though the datum line—the distance from the cartridge base to the shoulder—has been reduced from the .270 WSM’s 1.664 inches to 1.583 inches, and the case length shortened from 2.100 inches down to 2.020 inches. According to the [URL='https://saami.org/wp-content/uploads/2020/11/6.8-Western-Public-Introduction-Orig-2020-11-01.pdf']SAAMI specifications[/URL], the maximum cartridge overall length for the 6.8 Western is 2.955 inches" As far as what will it do that the 7mm Rem will not? From an external ballistics standpoint and effect on game likely there is no real difference, especially in the say 0-600 yard space. It does have some obvious differences, - Its a short fat cartridge that is SAAMI spec'd to fit nicely in a typical short actions - It is spec'd to use a fast twist barrel to make the heavies work good - It will likely fit into a shorter lighter rifles and still give nice external ballistics I'll stick with my custom 6.5 PRC, but in an off the off-the-shelf rifle with some good hand loading applied this should be a great new long range hunting cartridge shooting say the Berger 170gr EOL or the Nosler 165 ABLR. [/QUOTE]
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Fast Twist 270 Win vs. 6.8 Western
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