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Long Range Hunting & Shooting
1000 yds...Next step?
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<blockquote data-quote="Bart B" data-source="post: 659453" data-attributes="member: 5302"><p>You need to get in touch with the folks listed in the NRA web site's Records 600 and 1000 yard pages in the High Power Rifle section and ask them how they size their fired cases. Their shoulder fired rifles shoot just as accurate (and sometimes better than) as the long range benchrest folks do. Too bad they don't shoot as accurate fired hand held off ones shoulder than in free recoil like machine rests or benchresters do, but such is life.</p><p></p><p>I've shot test groups at 1000 with full length sized as well as brand new cases in SAAMI spec'd chambers that's smaller than current long range benchrest records. The agg of those six 5-shot groups smaller than any six 5-shot 1000 yard benchrest agg record. Agg's are the best measure of accuracy one can count on; smallest 5- or 10-shot groups are mostly luck as all the others are much larger.</p><p></p><p>There's a picture in a 1991 fall issue of Handloader magazine of a 600-yard 20-shot group fired with new .308 Win. cases in a SAAMI spec chamber. That groups about 2.7 inches. How many benchrest rifles do that well for 20 consecutive shots at 600 yards? That's a 5-shot group average of about 1.8 inches.</p><p></p><p>Check out the following: <a href="http://www.6mmbr.com/gunweek041.html" target="_blank">Speedy's 6PPC -- The Art of Accuracy</a> then go to the part starting out with: <strong>Most top 6PPC competitors run their ammo at pretty high pressures. Such pressures demand that cases be full-length sized each time they are loaded.</strong></p></blockquote><p></p>
[QUOTE="Bart B, post: 659453, member: 5302"] You need to get in touch with the folks listed in the NRA web site's Records 600 and 1000 yard pages in the High Power Rifle section and ask them how they size their fired cases. Their shoulder fired rifles shoot just as accurate (and sometimes better than) as the long range benchrest folks do. Too bad they don't shoot as accurate fired hand held off ones shoulder than in free recoil like machine rests or benchresters do, but such is life. I've shot test groups at 1000 with full length sized as well as brand new cases in SAAMI spec'd chambers that's smaller than current long range benchrest records. The agg of those six 5-shot groups smaller than any six 5-shot 1000 yard benchrest agg record. Agg's are the best measure of accuracy one can count on; smallest 5- or 10-shot groups are mostly luck as all the others are much larger. There's a picture in a 1991 fall issue of Handloader magazine of a 600-yard 20-shot group fired with new .308 Win. cases in a SAAMI spec chamber. That groups about 2.7 inches. How many benchrest rifles do that well for 20 consecutive shots at 600 yards? That's a 5-shot group average of about 1.8 inches. Check out the following: [url=http://www.6mmbr.com/gunweek041.html]Speedy's 6PPC -- The Art of Accuracy[/url] then go to the part starting out with: [B]Most top 6PPC competitors run their ammo at pretty high pressures. Such pressures demand that cases be full-length sized each time they are loaded.[/B] [/QUOTE]
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