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
split cases
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="Jamie6.5" data-source="post: 371247" data-attributes="member: 16954"><p>I have seen this problem before with belted mags.</p><p>If the cartridge "headspaced" at a datum line on the shoulder it would be a headspace problem by definition.</p><p>In the case of a belted mag however, it's not, because the "headspace" is measured at the belt.</p><p>But yet the case is stretching too far to fill the chamber at the shoulder/sidewall juncture, and at the shoulder/neck juncture.</p><p>I would call Thompson back and ask for a barrel with a shallower overall chamber depth, describing your cases.</p><p>Frequent Flyer nailed it for checking the cases, and that is definitely the correct way to go when checking for this symptom.</p><p></p><p>You can check how much stretch you are getting by measuring a new case length at the shoulder/neck or shoulder/sidewall vs a once or twice fired case.</p><p>You may even need to send some to Thompson to get them to admit what's happening.</p><p></p><p>Oh, and any cases you have fired in this "too deep" chamber will most likely no longer hold up. The stretch is already too much so you're going to have to start over with new cases.</p><p></p><p>Good luck with it.</p></blockquote><p></p>
[QUOTE="Jamie6.5, post: 371247, member: 16954"] I have seen this problem before with belted mags. If the cartridge "headspaced" at a datum line on the shoulder it would be a headspace problem by definition. In the case of a belted mag however, it's not, because the "headspace" is measured at the belt. But yet the case is stretching too far to fill the chamber at the shoulder/sidewall juncture, and at the shoulder/neck juncture. I would call Thompson back and ask for a barrel with a shallower overall chamber depth, describing your cases. Frequent Flyer nailed it for checking the cases, and that is definitely the correct way to go when checking for this symptom. You can check how much stretch you are getting by measuring a new case length at the shoulder/neck or shoulder/sidewall vs a once or twice fired case. You may even need to send some to Thompson to get them to admit what's happening. Oh, and any cases you have fired in this "too deep" chamber will most likely no longer hold up. The stretch is already too much so you're going to have to start over with new cases. Good luck with it. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
split cases
Top