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
7mm Rem Mag and Berger 195 Bullets...?
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="MudRunner2005" data-source="post: 1126294" data-attributes="member: 12995"><p>Unless you are at a super-high elevation above sea level (6,000+ feet), your factory 9.25" twist will not stabilize the 195's.</p><p> </p><p>For the slower velocities the 7mmRM will push the 195's to (estimating around 2,850 average), you will need at least an 8.25" twist... to stabilize them, according to Berger's calculator.</p><p> </p><p>It shows at 0 ft elevation (which only jumps up about .02 SG per 500' of elevation) you will only have 1.21 SG, and you need at least 1.5 SG or greater for it to be a stabile setup.</p><p> </p><p>To achieve a 1.5 SG with a 9.25" twist, and the bullet traveling 2,850 fps MV (or more), you would have to be hunting at 6,000 ft of elevation minimum.</p></blockquote><p></p>
[QUOTE="MudRunner2005, post: 1126294, member: 12995"] Unless you are at a super-high elevation above sea level (6,000+ feet), your factory 9.25" twist will not stabilize the 195's. For the slower velocities the 7mmRM will push the 195's to (estimating around 2,850 average), you will need at least an 8.25" twist... to stabilize them, according to Berger's calculator. It shows at 0 ft elevation (which only jumps up about .02 SG per 500' of elevation) you will only have 1.21 SG, and you need at least 1.5 SG or greater for it to be a stabile setup. To achieve a 1.5 SG with a 9.25" twist, and the bullet traveling 2,850 fps MV (or more), you would have to be hunting at 6,000 ft of elevation minimum. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm Rem Mag and Berger 195 Bullets...?
Top