Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Reloading
300 Win Mag Build and Loading Questions.
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Bart B" data-source="post: 1148618" data-attributes="member: 5302"><p>I'm referring to the seating die's bullet chamber that aligns the bullet with the case neck as the case is held by the seater die's body. The bigger they are than bullet diameter, the more the bullet can end up crooked or off center relative to the case axis.</p><p></p><p>I've measured my 30 caliber seater die's bullet chamber diameter:</p><p></p><p>Wilson BR chamber type .308, circa 1966; .3105"</p><p>RCBS standard .308, circa 1966; . . . . . . .3100"</p><p>RCBS standard .308, circa 1979; . . . . . . .3115"</p><p>RCBS competition .308, circa 1980's; . . . .3107"</p><p>RCBS standard .300 Win Mag, circa 1999, .3104"</p><p>RCBS standard .30-.338, circa 1967, . . . .3102"</p><p>Bonanza BR .30-.338, circa 1980; . . . . . .3093"</p><p></p><p>Compare those to 30 caliber bullet diameters I've measured that go from .3070" to .3092". Sierra's bullets range from .3082" to .3084" as I've measured. Lapua's D46 match bullet had the largest ones at .3092".</p><p></p><p>It's my opinion that 98% of all loaded round bullet runout and concentricity problems are caused by the fired case resizing process and die used that ends up with bad case neck issues.</p></blockquote><p></p>
[QUOTE="Bart B, post: 1148618, member: 5302"] I'm referring to the seating die's bullet chamber that aligns the bullet with the case neck as the case is held by the seater die's body. The bigger they are than bullet diameter, the more the bullet can end up crooked or off center relative to the case axis. I've measured my 30 caliber seater die's bullet chamber diameter: Wilson BR chamber type .308, circa 1966; .3105" RCBS standard .308, circa 1966; . . . . . . .3100" RCBS standard .308, circa 1979; . . . . . . .3115" RCBS competition .308, circa 1980's; . . . .3107" RCBS standard .300 Win Mag, circa 1999, .3104" RCBS standard .30-.338, circa 1967, . . . .3102" Bonanza BR .30-.338, circa 1980; . . . . . .3093" Compare those to 30 caliber bullet diameters I've measured that go from .3070" to .3092". Sierra's bullets range from .3082" to .3084" as I've measured. Lapua's D46 match bullet had the largest ones at .3092". It's my opinion that 98% of all loaded round bullet runout and concentricity problems are caused by the fired case resizing process and die used that ends up with bad case neck issues. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
300 Win Mag Build and Loading Questions.
Top