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
Bartlein Gain Twist Barrel Report
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="Black Diamond 408" data-source="post: 328265" data-attributes="member: 1563"><p>I installed my 375 cal Bartlein "T" twist or Gain twist barrel and chambered it in my 375 Snipetac caliber. The barrel starts off at 1 turn in 16" twist at the breech, speeds up to 1 turn in 7.75" at the muzzle,31" long. This barrel is intended for the new style Alum tipped high BC bullets, but for barrel break in I will be using the 350gn Sierra Matchkings.</p><p></p><p><img src="http://www.hunt101.com/data/500/medium/137_cropped.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Viersco Custom repeater action</p><p>double helical fluting on bolt</p><p>Manners MCS T2 carbon stock</p><p>Bartlein stainless barrel, 31" </p><p>Detachable 5 shot magazine system</p><p>30 moa scope base</p><p>8-32x56 nightforce scope</p><p>Jewell trigger</p><p>17.25# with Bipod</p><p></p><p>Starting test results were done during shoot n clean barrel break in.</p><p></p><p>Retumbo powder</p><p>fed 215 primers</p><p>350gn Sierra matchking bullet, seated to touch lands.</p><p></p><p>130gns powder</p><p>2919 Ave fps ES 5 .780 group</p><p></p><p>132gns powder</p><p>2949 Ave fps ES 8 .665 group</p><p></p><p>134gns powder</p><p>3001 Ave fps ES 7 .195 group</p><p>This group was fired with no cleaning between shots. Shot 1 was clean barrel, 2-3 and 4 were</p><p>in a ragged hole.</p><p><img src="http://www.hunt101.com/data/500/medium/Target8.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>I am working up to the top load as I break in the barrel, all of the test loads show no pressure signs. I was shooting 140gns in another one of my rilfes chambered for the same case. I will take my time getting to the top load while break in of the barrel. Once this is done I will switch over to the 370gn Alum tipped bullets and stretch out the range to 500yds.</p><p></p><p>Dave</p></blockquote><p></p>
[QUOTE="Black Diamond 408, post: 328265, member: 1563"] I installed my 375 cal Bartlein "T" twist or Gain twist barrel and chambered it in my 375 Snipetac caliber. The barrel starts off at 1 turn in 16" twist at the breech, speeds up to 1 turn in 7.75" at the muzzle,31" long. This barrel is intended for the new style Alum tipped high BC bullets, but for barrel break in I will be using the 350gn Sierra Matchkings. [img]http://www.hunt101.com/data/500/medium/137_cropped.JPG[/img] Viersco Custom repeater action double helical fluting on bolt Manners MCS T2 carbon stock Bartlein stainless barrel, 31" Detachable 5 shot magazine system 30 moa scope base 8-32x56 nightforce scope Jewell trigger 17.25# with Bipod Starting test results were done during shoot n clean barrel break in. Retumbo powder fed 215 primers 350gn Sierra matchking bullet, seated to touch lands. 130gns powder 2919 Ave fps ES 5 .780 group 132gns powder 2949 Ave fps ES 8 .665 group 134gns powder 3001 Ave fps ES 7 .195 group This group was fired with no cleaning between shots. Shot 1 was clean barrel, 2-3 and 4 were in a ragged hole. [img]http://www.hunt101.com/data/500/medium/Target8.JPG[/img] I am working up to the top load as I break in the barrel, all of the test loads show no pressure signs. I was shooting 140gns in another one of my rilfes chambered for the same case. I will take my time getting to the top load while break in of the barrel. Once this is done I will switch over to the 370gn Alum tipped bullets and stretch out the range to 500yds. Dave [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bartlein Gain Twist Barrel Report
Top