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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel twist for 7mm
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<blockquote data-quote="Ridgerunner665" data-source="post: 1005817" data-attributes="member: 12660"><p>He did specify 500 yards...</p><p></p><p>And for that, 1 in 9" is plenty....there is no benefit whatsoever to using 180+ grain bullets at that distance....not worth the hassle of "specialty" bullets, or "specialty" twists.</p><p></p><p>The need for fast twist and 180+ grain bullets only becomes real past 800 yards, and only if you have a big jugged magnum round (7mm Allen Mag for example)...the Rem Mag just doesn't have enough capacity/speed to make use of it.</p><p></p><p>As in all things...too much of a good thing...is bad.</p><p></p><p>Unless you're reaching for 1,200 yard hunting with a really big magnum...1 in 9" twist is all you'll ever need.</p><p></p><p>If twist rates keep going the direction they're heading...it won't be long before lathe turned bullets are required, lol...and loaded into necked down 30mm brass.</p><p></p><p>I know and understand the benefits of fast twist and long, sleek bullets...but I also know there comes a point of diminishing returns, and I believe that point is about 180 grains with any standard magnum (Rem Mag, WSM, Weatherby, etc.)...from the STW on up, 1 in 8" will be of some use with 190 grain bullets.</p></blockquote><p></p>
[QUOTE="Ridgerunner665, post: 1005817, member: 12660"] He did specify 500 yards... And for that, 1 in 9" is plenty....there is no benefit whatsoever to using 180+ grain bullets at that distance....not worth the hassle of "specialty" bullets, or "specialty" twists. The need for fast twist and 180+ grain bullets only becomes real past 800 yards, and only if you have a big jugged magnum round (7mm Allen Mag for example)...the Rem Mag just doesn't have enough capacity/speed to make use of it. As in all things...too much of a good thing...is bad. Unless you're reaching for 1,200 yard hunting with a really big magnum...1 in 9" twist is all you'll ever need. If twist rates keep going the direction they're heading...it won't be long before lathe turned bullets are required, lol...and loaded into necked down 30mm brass. I know and understand the benefits of fast twist and long, sleek bullets...but I also know there comes a point of diminishing returns, and I believe that point is about 180 grains with any standard magnum (Rem Mag, WSM, Weatherby, etc.)...from the STW on up, 1 in 8" will be of some use with 190 grain bullets. [/QUOTE]
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Barrel twist for 7mm
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