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
Making 257 wby brass from 7mm wby brass
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="VinceMule" data-source="post: 2727633" data-attributes="member: 122164"><p>Put a very heavy chamfer on the outside of the case mouth as an aid for the neck entering the smaller dimension.</p><p></p><p>I used Lee Sizing wax in the tooth paste container, which worked much better than the Imperial sizing wax. Cases should be formed perfectly, necks slightly longer, do not use expander mandrel in the process. </p><p></p><p>As someone else mentioned, check neck thickness.</p><p></p><p>I had a reamer ground by PTG so I could neck down Winchester 264 Win mag brass and have the correct neck length in the formed cases. The reamer was also ground with only .030 freebore. I shot 100's at 3850 on 10T, 26" barrels producing 3/8" groups with 6x24 scope.</p></blockquote><p></p>
[QUOTE="VinceMule, post: 2727633, member: 122164"] Put a very heavy chamfer on the outside of the case mouth as an aid for the neck entering the smaller dimension. I used Lee Sizing wax in the tooth paste container, which worked much better than the Imperial sizing wax. Cases should be formed perfectly, necks slightly longer, do not use expander mandrel in the process. As someone else mentioned, check neck thickness. I had a reamer ground by PTG so I could neck down Winchester 264 Win mag brass and have the correct neck length in the formed cases. The reamer was also ground with only .030 freebore. I shot 100's at 3850 on 10T, 26" barrels producing 3/8" groups with 6x24 scope. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Making 257 wby brass from 7mm wby brass
Top