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 jrs
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="KRP" data-source="post: 605861" data-attributes="member: 9969"><p>How else do they form cases? I think the confusion is that the term improved is often automatically associated with the name Ackley. PO designed his improved chambers with the thought of being able to safely fire standard ammo in them, many others didn't. It's not the case that's the concern with the JRS...it's standard ammo. I've never used anything but 270 brass in my 280AI so the shoulder moves forward ~.050" on the first firing. Put a false shoulder on the brass to keep the case head snug against the bolt face and then shoot it. Others use a bullet with a significant jam into the rifling to do the same, I haven't had as much luck with this method. Gibbs rounds move the shoulder forward ~.200" and it's not a problem when done correctly.</p></blockquote><p></p>
[QUOTE="KRP, post: 605861, member: 9969"] How else do they form cases? I think the confusion is that the term improved is often automatically associated with the name Ackley. PO designed his improved chambers with the thought of being able to safely fire standard ammo in them, many others didn't. It's not the case that's the concern with the JRS...it's standard ammo. I've never used anything but 270 brass in my 280AI so the shoulder moves forward ~.050" on the first firing. Put a false shoulder on the brass to keep the case head snug against the bolt face and then shoot it. Others use a bullet with a significant jam into the rifling to do the same, I haven't had as much luck with this method. Gibbs rounds move the shoulder forward ~.200" and it's not a problem when done correctly. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm jrs
Top