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Rifles, Reloading, Optics, Equipment
Reloading
Reloading belted mags.
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<blockquote data-quote="Bart B" data-source="post: 100399" data-attributes="member: 5302"><p>Taos, in the late 1960's, my first long range target rifle on a Win. 70 action was a .264 Win. Mag. Sierra Bullets' Test Range Manager explained why I should full-length size cases for it instead of neck sizing 'em. So I did some tests. I knew the barrel was going to wear out quickly, so I limited my tests to two 15-shot 1000-yard groups. Neck sized cases shot about 13 inches with Norma 139-gr. match bullets. Same bullets in double-full-length sized cases went into 7 inches. Won some 1000-yard matches with that barrel but it died at 648 rounds and started shooting wash-tub size groups.</p><p></p><p>Martin Hull (then Sierra's bullet tester extraordinaire) gave me a couple of boxes of their then-new .264 caliber 140-gr. match bullets. He said if I could shoot them well enough to win a couple of matches, Sierra would give me 2000 more of them to use in my next three .264 Win. Mag. barrels. I shot four 10-shot test groups at 1000 yards with them but none were under 20 inches, so I told Martin Hull I couldn't get them to shoot. He said neither could Sierra. Apparently they couldn't get jacket material good enough to make those long jackets' wall thickness uniform enough. They had the same problem in 1970 with their first .284-inch 168-gr. HPMK bullets. It wasn't until the 1980's before anybody could make copper sheets good enough for very accurate, very long match bullets.</p><p></p><p>Sierra's guy told me he used full-length sizing dies for all of Sierra's test ammo; both stuff to test their bullets for accuracy in very thick and stiff test barrels as well as all kinds of rifles to develop handload data. When he gave me a tour of their California site, their loading room was very well stocked with only full-length sizing dies. Sierra still full-length sizes all their cases for testing and I don't think anybody shoots their bullets as accurate at 200 yards than they do. Martin Hull passed a few years ago but I still remember his phrase explaining how a bottleneck case has to fit the chamber for best accuracy; "It's gotta fit the chamber like a turd in a punch bowl!"</p></blockquote><p></p>
[QUOTE="Bart B, post: 100399, member: 5302"] Taos, in the late 1960's, my first long range target rifle on a Win. 70 action was a .264 Win. Mag. Sierra Bullets' Test Range Manager explained why I should full-length size cases for it instead of neck sizing 'em. So I did some tests. I knew the barrel was going to wear out quickly, so I limited my tests to two 15-shot 1000-yard groups. Neck sized cases shot about 13 inches with Norma 139-gr. match bullets. Same bullets in double-full-length sized cases went into 7 inches. Won some 1000-yard matches with that barrel but it died at 648 rounds and started shooting wash-tub size groups. Martin Hull (then Sierra's bullet tester extraordinaire) gave me a couple of boxes of their then-new .264 caliber 140-gr. match bullets. He said if I could shoot them well enough to win a couple of matches, Sierra would give me 2000 more of them to use in my next three .264 Win. Mag. barrels. I shot four 10-shot test groups at 1000 yards with them but none were under 20 inches, so I told Martin Hull I couldn't get them to shoot. He said neither could Sierra. Apparently they couldn't get jacket material good enough to make those long jackets' wall thickness uniform enough. They had the same problem in 1970 with their first .284-inch 168-gr. HPMK bullets. It wasn't until the 1980's before anybody could make copper sheets good enough for very accurate, very long match bullets. Sierra's guy told me he used full-length sizing dies for all of Sierra's test ammo; both stuff to test their bullets for accuracy in very thick and stiff test barrels as well as all kinds of rifles to develop handload data. When he gave me a tour of their California site, their loading room was very well stocked with only full-length sizing dies. Sierra still full-length sizes all their cases for testing and I don't think anybody shoots their bullets as accurate at 200 yards than they do. Martin Hull passed a few years ago but I still remember his phrase explaining how a bottleneck case has to fit the chamber for best accuracy; "It's gotta fit the chamber like a turd in a punch bowl!" [/QUOTE]
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Reloading
Reloading belted mags.
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