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
Hunting
Long Range Hunting & Shooting
Help load development
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="Hugnot" data-source="post: 2142454" data-attributes="member: 115658"><p>Looks like my last adventure with my 6mm-06. In my case I quit using the loads that produced fliers, pulled bullets and retreated back to my laboratory, verified the twist,. I then elected another bullet that was optimum for my barrel twist and started about 1.5 grains below estimated max (it's that wildcat thing) and worked my way up in .5 grain increments bullet seated .05 down. I got a good handle on the problem and will finalize tune up next time. I take it that the rifle is a 6.5 PRC, those 156 grain 6.5 bullets must be real long & pointy. I shoved a cleaning rod having a tight patch on jag, down bore about 1 foot, wrapped masking tape on rod, marked tape with felt tip pen, lined up tape with receiver ring and slowly pulled rod out and stopped & measured upon 1 complete revolution - sure enough an 8 twist - just like the nice gun smith crew was directed. I also checked, neck tension, bullet run-out and trim length. I also measured my bullet lengths.</p><p></p><p>[URL unfurl="true"]https://bergerbullets.com/twist-rate-calculator/[/URL]</p><p></p><p>This might help. An 8 twist gives "marginal stability" as per Berger Sg analysis. I don't have a clue of what the twist rate for your rifle is. Should shoot 140's beautiful.</p></blockquote><p></p>
[QUOTE="Hugnot, post: 2142454, member: 115658"] Looks like my last adventure with my 6mm-06. In my case I quit using the loads that produced fliers, pulled bullets and retreated back to my laboratory, verified the twist,. I then elected another bullet that was optimum for my barrel twist and started about 1.5 grains below estimated max (it's that wildcat thing) and worked my way up in .5 grain increments bullet seated .05 down. I got a good handle on the problem and will finalize tune up next time. I take it that the rifle is a 6.5 PRC, those 156 grain 6.5 bullets must be real long & pointy. I shoved a cleaning rod having a tight patch on jag, down bore about 1 foot, wrapped masking tape on rod, marked tape with felt tip pen, lined up tape with receiver ring and slowly pulled rod out and stopped & measured upon 1 complete revolution - sure enough an 8 twist - just like the nice gun smith crew was directed. I also checked, neck tension, bullet run-out and trim length. I also measured my bullet lengths. [URL unfurl="true"]https://bergerbullets.com/twist-rate-calculator/[/URL] This might help. An 8 twist gives "marginal stability" as per Berger Sg analysis. I don't have a clue of what the twist rate for your rifle is. Should shoot 140's beautiful. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Hunting
Long Range Hunting & Shooting
Help load development
Top