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
7mm STW
195 Bergers and Vihtavuroi N570
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="jweigel" data-source="post: 1215284" data-attributes="member: 72021"><p>I wanted to post my findings with this combo in my Factory Sendero. Started with the bullet seating testing all done at 77 grains of N570 with Fed215. Found .050 off the lands was best in this gun. Groups were nothing special. Then did pressure testing starting at 77 and going up to 84 grains. Had extractor marks at 83 and 84, bolt lift at 84. Speeds ranged from 2950 at 78g up to 3200 at 84 g. The loads from 81 on up really opened up so I loaded a group from 78g up to 80g and shot yesterday. The 78 and 79 had really low ES (6 and 12 respectively) but groups were just over 1 MOA. At 80 grains the point of impact jump 5" vertically and the three shot group was a .31" MOA. AV speeds were 2914 - 78g, 2969 - 79g, and 3103 - 80g.</p><p></p><p>I have found this powder really lays down lots of powder fouling. ....and I mean lots. I started to clean (Wipe Out) after ever shoot. </p><p></p><p>Going to load up a 79.5, 80.0, 80.5 and 81.0 to see if that .31 group was for real or a fluke. After shooting about 120 rounds working on this bullet, I have only had three groups under 1 MOA. But not sure if the barrel fouling was misleading the testing.</p><p></p><p>Will see.</p><p></p><p>jjw</p><p>ND</p></blockquote><p></p>
[QUOTE="jweigel, post: 1215284, member: 72021"] I wanted to post my findings with this combo in my Factory Sendero. Started with the bullet seating testing all done at 77 grains of N570 with Fed215. Found .050 off the lands was best in this gun. Groups were nothing special. Then did pressure testing starting at 77 and going up to 84 grains. Had extractor marks at 83 and 84, bolt lift at 84. Speeds ranged from 2950 at 78g up to 3200 at 84 g. The loads from 81 on up really opened up so I loaded a group from 78g up to 80g and shot yesterday. The 78 and 79 had really low ES (6 and 12 respectively) but groups were just over 1 MOA. At 80 grains the point of impact jump 5" vertically and the three shot group was a .31" MOA. AV speeds were 2914 - 78g, 2969 - 79g, and 3103 - 80g. I have found this powder really lays down lots of powder fouling. ....and I mean lots. I started to clean (Wipe Out) after ever shoot. Going to load up a 79.5, 80.0, 80.5 and 81.0 to see if that .31 group was for real or a fluke. After shooting about 120 rounds working on this bullet, I have only had three groups under 1 MOA. But not sure if the barrel fouling was misleading the testing. Will see. jjw ND [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
7mm STW
195 Bergers and Vihtavuroi N570
Top