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Rifles, Reloading, Optics, Equipment
Reloading
Wilson micrometer bullet seating die
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<blockquote data-quote="Bart B" data-source="post: 1158392" data-attributes="member: 5302"><p>Here's my seater diameters; original chamber diameters included for direct comparison.</p><p></p><p>All seater bullet contact edges were measured at their sharp point. The taper to the bottom doesn't touch any of my bullets nor does the 45 or so degree bevel at the edges of some. 'Tis my opinion that only that sharp edge matters. With different bullet ogive shapes and metal properties, it'll groove the bullets different amount at its "ogive" contact point. The diameter will be the same but its length will vary. </p><p></p><p>Seater & ogive touch diameters . . . . . . . .Chmb. . . Stem. . .Ogive</p><p></p><p>Wilson BR chamber type .308, circa 1966;.3105". . . .310". . .266"</p><p>RCBS standard .308, circa 1966; . . . . . . . 3100". . . .305". . .251"</p><p>RCBS standard .308, circa 1979; . . . . . . . 3115". . . .306". . .249"</p><p>RCBS competition .308, circa 1980's; . . . . 3107". . . .300". . .269"</p><p>RCBS standard .300 Win Mag, circa 1999, . 3104". . . .304". . .250"</p><p>RCBS standard .30-.338, circa 1967, . . . . .3102". . . .306". . .249"</p><p>Bonanza BR .30-.338, circa 1980; . . . . . . .3090". . . .310". . .266"</p><p></p><p>Remeasured the Bonanza BR .30-.338 die's bullet chamber; a bit smaller than before. Sierra bullets at .3082" diameter barely slipped through it.</p></blockquote><p></p>
[QUOTE="Bart B, post: 1158392, member: 5302"] Here's my seater diameters; original chamber diameters included for direct comparison. All seater bullet contact edges were measured at their sharp point. The taper to the bottom doesn't touch any of my bullets nor does the 45 or so degree bevel at the edges of some. 'Tis my opinion that only that sharp edge matters. With different bullet ogive shapes and metal properties, it'll groove the bullets different amount at its "ogive" contact point. The diameter will be the same but its length will vary. Seater & ogive touch diameters . . . . . . . .Chmb. . . Stem. . .Ogive Wilson BR chamber type .308, circa 1966;.3105". . . .310". . .266" RCBS standard .308, circa 1966; . . . . . . . 3100". . . .305". . .251" RCBS standard .308, circa 1979; . . . . . . . 3115". . . .306". . .249" RCBS competition .308, circa 1980's; . . . . 3107". . . .300". . .269" RCBS standard .300 Win Mag, circa 1999, . 3104". . . .304". . .250" RCBS standard .30-.338, circa 1967, . . . . .3102". . . .306". . .249" Bonanza BR .30-.338, circa 1980; . . . . . . .3090". . . .310". . .266" Remeasured the Bonanza BR .30-.338 die’s bullet chamber; a bit smaller than before. Sierra bullets at .3082" diameter barely slipped through it. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Wilson micrometer bullet seating die
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