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
Reloading
Virgin brass vs. fire formed
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="Frogman77" data-source="post: 316656" data-attributes="member: 15339"><p>I'm fairly new to the game but I have found a huge difference between new winchester brass to fire formed brass in my .30-06.</p><p> </p><p>I did some measurements of virgin brass and once fired brass and the new brass at the shoulder measured .0195 - .020" short of my once fired brass. Accuracy was about 1.25 moa at 100 yards with virgin brass and in the .3 moa range with once fired brass. </p><p> </p><p>I am guessing this is due to the excessive headspace with the virgin brass. </p><p> </p><p>My once fired brass measures .005" longer at the shoulder than book specs. (1.953" once fired vs. 1.948") This is a snug fit in the chamber and requires just a little more effort to close the bolt. New winchester brass measures 1.933-1.934" to the shoulder</p><p> </p><p>I need to try some different brass to see if they measure that short when they're new. I can do ladder testing with new brass but I'm not sure load development for accuracy will work. At least with new winchester brass measuring that short in my chamber.</p></blockquote><p></p>
[QUOTE="Frogman77, post: 316656, member: 15339"] I'm fairly new to the game but I have found a huge difference between new winchester brass to fire formed brass in my .30-06. I did some measurements of virgin brass and once fired brass and the new brass at the shoulder measured .0195 - .020" short of my once fired brass. Accuracy was about 1.25 moa at 100 yards with virgin brass and in the .3 moa range with once fired brass. I am guessing this is due to the excessive headspace with the virgin brass. My once fired brass measures .005" longer at the shoulder than book specs. (1.953" once fired vs. 1.948") This is a snug fit in the chamber and requires just a little more effort to close the bolt. New winchester brass measures 1.933-1.934" to the shoulder I need to try some different brass to see if they measure that short when they're new. I can do ladder testing with new brass but I'm not sure load development for accuracy will work. At least with new winchester brass measuring that short in my chamber. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Virgin brass vs. fire formed
Top