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
Thoughts on Lothar Walther?
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="Buck Fever" data-source="post: 1938657" data-attributes="member: 113501"><p>I got my 0.400" headspace comparator out and found the problem, it is about 0.013" longer than the Hornady modified case. I guess my presbyopia is getting the better of me, luckily my first prescription readers should be in my hands next Tuesday.</p><p></p><p>I'm going to see if I can bump it back another 0.009" and see if it closes so that I can nail the initial brass sizing and reduce the stretch on first firing.</p><p></p><p>Now a question, how much can a chamber move back when going from hand tight to 150 ft-lbs?</p><p></p><p>My rough calculation using bolt stretch calculators suggests possibly around 0.002" stretch but is that all behind the cartridge shoulder, leaving it relatively the same from a headspace perspective? </p><p></p><p>The 0.002" stretch also suggests about 14° of twist past hand tight to get to 150 ft-lbs torque.</p></blockquote><p></p>
[QUOTE="Buck Fever, post: 1938657, member: 113501"] I got my 0.400" headspace comparator out and found the problem, it is about 0.013" longer than the Hornady modified case. I guess my presbyopia is getting the better of me, luckily my first prescription readers should be in my hands next Tuesday. I'm going to see if I can bump it back another 0.009" and see if it closes so that I can nail the initial brass sizing and reduce the stretch on first firing. Now a question, how much can a chamber move back when going from hand tight to 150 ft-lbs? My rough calculation using bolt stretch calculators suggests possibly around 0.002" stretch but is that all behind the cartridge shoulder, leaving it relatively the same from a headspace perspective? The 0.002" stretch also suggests about 14° of twist past hand tight to get to 150 ft-lbs torque. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Gunsmithing
Thoughts on Lothar Walther?
Top