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
Gunsmithing
Headspace Gauges
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="DoneNOut" data-source="post: 2785543" data-attributes="member: 113404"><p>All the 308s I've shot for the past 25yrs have fired the shoulders to 1.620-22. That went for factory bolt rifles, AR10s, M1A, FAL. When I built my first custom and recent 308 bolt guns, the Forster Go and No-Go put the fire formed shoulder to 1.611. Factory new Lapua brass and Federal Gold medal match come with shoulders at 1.605. (My Hornady comparator set. I hear they aren't all precise, so these are comparative measurements)</p><p></p><p>So, I'm reducing stretch on the brass from the factory length. I'm also needing 1-1.5gr less powder than my previous 168 Amax loads fired in the typical "longer chambers" to achieve same velocities. The Forster must be "match" chamber dimensions because I know if I get some resistance closing the bolt on the No-go gauge, the shoulders will fire a couple thou longer, but still way under 1.620. I'm tired and rambling I'll shut up for now! <img class="smilie smilie--emoji" loading="lazy" alt="🤣" title="Rolling on the floor laughing :rofl:" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f923.png" data-shortname=":rofl:" /><img class="smilie smilie--emoji" loading="lazy" alt="🤣" title="Rolling on the floor laughing :rofl:" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f923.png" data-shortname=":rofl:" /></p></blockquote><p></p>
[QUOTE="DoneNOut, post: 2785543, member: 113404"] All the 308s I’ve shot for the past 25yrs have fired the shoulders to 1.620-22. That went for factory bolt rifles, AR10s, M1A, FAL. When I built my first custom and recent 308 bolt guns, the Forster Go and No-Go put the fire formed shoulder to 1.611. Factory new Lapua brass and Federal Gold medal match come with shoulders at 1.605. (My Hornady comparator set. I hear they aren’t all precise, so these are comparative measurements) So, I’m reducing stretch on the brass from the factory length. I’m also needing 1-1.5gr less powder than my previous 168 Amax loads fired in the typical “longer chambers” to achieve same velocities. The Forster must be “match” chamber dimensions because I know if I get some resistance closing the bolt on the No-go gauge, the shoulders will fire a couple thou longer, but still way under 1.620. I’m tired and rambling I’ll shut up for now! 🤣🤣 [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Gunsmithing
Headspace Gauges
Top