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
.257, 6.5mm and 270 Allen Mags, New Family or Rounds...
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="DANTEC" data-source="post: 36729" data-attributes="member: 685"><p>I am not very skill in 0.257 caliber but I have make a lot of test and trial in 0.264 ( closest caliber of the 0.257 )</p><p></p><p>I have start with 264 WIN mag 139 Scenar and get 3250/3300 </p><p></p><p>after to make some test in 6.5/300 wea I have get 3450 fps in long barrel </p><p></p><p>I have redesign the 264 WIN mag by lengthening th eneck and put a parellel throat the cartridge is 6.5/300 DTC Yuma I use 264 win mag die andcase are made in 300 win mag to get longer neck </p><p></p><p>my question is with the 264 WIN body I get enought romm to load at full density 50 BMG powder ( slow BMG powder use in 50 and 20 mm ) to reach top velocity as 3400 fps ( at safe pressure ) </p><p></p><p>so my question is with 90 grain of powder load you ahve still room in your case , does this romm is a improvement or do you can you load at full density because I always design case /cartridge to be at 100/102% ( slighty compressed load ) of the slowest powder I can use </p><p></p><p>if your 257 bullet ULD work that can be very sweet solution in 257 WE </p><p></p><p>good shooting</p><p></p><p>DAN TEC</p></blockquote><p></p>
[QUOTE="DANTEC, post: 36729, member: 685"] I am not very skill in 0.257 caliber but I have make a lot of test and trial in 0.264 ( closest caliber of the 0.257 ) I have start with 264 WIN mag 139 Scenar and get 3250/3300 after to make some test in 6.5/300 wea I have get 3450 fps in long barrel I have redesign the 264 WIN mag by lengthening th eneck and put a parellel throat the cartridge is 6.5/300 DTC Yuma I use 264 win mag die andcase are made in 300 win mag to get longer neck my question is with the 264 WIN body I get enought romm to load at full density 50 BMG powder ( slow BMG powder use in 50 and 20 mm ) to reach top velocity as 3400 fps ( at safe pressure ) so my question is with 90 grain of powder load you ahve still room in your case , does this romm is a improvement or do you can you load at full density because I always design case /cartridge to be at 100/102% ( slighty compressed load ) of the slowest powder I can use if your 257 bullet ULD work that can be very sweet solution in 257 WE good shooting DAN TEC [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.257, 6.5mm and 270 Allen Mags, New Family or Rounds...
Top