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
Rifles, Bullets, Barrels & Ballistics
what is the best crown?
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: 655934" data-attributes="member: 5302"><p>First, with the bore axis turning exactly on center in a steady rest, make an 11 degree recessed face to the muzzle's edge cutting from the bore out. Then use a lapping ball about 1.5 times the groove diameter to crown the bore out at a 40 to 50 degree angle to a few thousandths past the groove diameter that's extremely uniform all the way around. </p><p></p><p>What are the "other" variables, anyway?</p></blockquote><p></p>
[QUOTE="Bart B, post: 655934, member: 5302"] First, with the bore axis turning exactly on center in a steady rest, make an 11 degree recessed face to the muzzle's edge cutting from the bore out. Then use a lapping ball about 1.5 times the groove diameter to crown the bore out at a 40 to 50 degree angle to a few thousandths past the groove diameter that's extremely uniform all the way around. What are the "other" variables, anyway? [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
what is the best crown?
Top