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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Len - 7mm
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<blockquote data-quote="Len Backus" data-source="post: 33441" data-attributes="member: 1"><p>I am far from an expert source of info on the use of the 7mm for long range. But from what I read, the current quality of bullets available is no longer a hindrance. Then if you consider the inherent ballistic coefficient advantage of the 7mm over anything else, there should be more use of this caliber in the future.</p><p></p><p>As an example, my 7/338 Lapua should be done soon. I expect close to 3,500 fps with my 32 inch barrel and the 176 grain Cauterucio (.750 BC) match bullet. The ballistics with this combo, IMHO, beat anything else out there for an accurate, practical killing machine out well past my comfortable hunting range.</p><p></p><p>It beats all the biggest 30 cal cartridges in stats for retained energy, wind bucking and flat shooting. Clicks to 1,000 yards will be 15 MOA vs 18 for the big 30/338 Lapua with the JLK 210 (.670 BC) bullet. Wind drift (10 mph)is 37 inches vs 46. Energy is 2,000 ft-lbs vs 1,850.</p><p></p><p>Another important factor is recoil as it affects the ability to shoot well and to see the bullet's impact on game. 22 ft-lbs vs 27 (assuming an 18.5 pound rifle combo.</p><p></p><p>[ 05-05-2004: Message edited by: Len Backus ]</p></blockquote><p></p>
[QUOTE="Len Backus, post: 33441, member: 1"] I am far from an expert source of info on the use of the 7mm for long range. But from what I read, the current quality of bullets available is no longer a hindrance. Then if you consider the inherent ballistic coefficient advantage of the 7mm over anything else, there should be more use of this caliber in the future. As an example, my 7/338 Lapua should be done soon. I expect close to 3,500 fps with my 32 inch barrel and the 176 grain Cauterucio (.750 BC) match bullet. The ballistics with this combo, IMHO, beat anything else out there for an accurate, practical killing machine out well past my comfortable hunting range. It beats all the biggest 30 cal cartridges in stats for retained energy, wind bucking and flat shooting. Clicks to 1,000 yards will be 15 MOA vs 18 for the big 30/338 Lapua with the JLK 210 (.670 BC) bullet. Wind drift (10 mph)is 37 inches vs 46. Energy is 2,000 ft-lbs vs 1,850. Another important factor is recoil as it affects the ability to shoot well and to see the bullet's impact on game. 22 ft-lbs vs 27 (assuming an 18.5 pound rifle combo. [ 05-05-2004: Message edited by: Len Backus ] [/QUOTE]
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Len - 7mm
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