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
Will a 1 in 8 twist?
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="brianwinzor" data-source="post: 133097" data-attributes="member: 1067"><p>I believe that you may have some chance of stabilising the 90 grain Sierra MK, (about 1.160 inches)but getting eneough rpms to shoot accurately may be a problem.</p><p></p><p>I believe that you have no chance of stabilising enough to get accuracy with 90 grain bullets from JLK (1.225 in) or Berger (about 1.250)with the 8 twist barrel.</p><p></p><p>A few that I know found that the 90 grain JLK at about 3,500 from 22/6mm AI, would just stabilise, but accuracy was terrible. </p><p></p><p>A custom bullet maker told me about 5 years ago, that his experiments showed that the Krieger 7.7 twist was the minimum when using the 90 grain JLK in his 22/243 Middlestead.</p><p></p><p>I chronographed bullet weights from 65 - 100 grains in my 22/250AI to see what velocities the case was capable of producing. I got about 3,100 - 3150 fps with the 90 grain Sierra MK in a Shilen 24.5 inch 1 in 10 twist barrel. (Obviously they keyholed into target)</p><p></p><p>Hope that the above is of some help. Brian.</p></blockquote><p></p>
[QUOTE="brianwinzor, post: 133097, member: 1067"] I believe that you may have some chance of stabilising the 90 grain Sierra MK, (about 1.160 inches)but getting eneough rpms to shoot accurately may be a problem. I believe that you have no chance of stabilising enough to get accuracy with 90 grain bullets from JLK (1.225 in) or Berger (about 1.250)with the 8 twist barrel. A few that I know found that the 90 grain JLK at about 3,500 from 22/6mm AI, would just stabilise, but accuracy was terrible. A custom bullet maker told me about 5 years ago, that his experiments showed that the Krieger 7.7 twist was the minimum when using the 90 grain JLK in his 22/243 Middlestead. I chronographed bullet weights from 65 - 100 grains in my 22/250AI to see what velocities the case was capable of producing. I got about 3,100 - 3150 fps with the 90 grain Sierra MK in a Shilen 24.5 inch 1 in 10 twist barrel. (Obviously they keyholed into target) Hope that the above is of some help. Brian. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Will a 1 in 8 twist?
Top