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
6mm STW
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="Fiftydriver" data-source="post: 199848" data-attributes="member: 10"><p>The 6.5mm would be a much better choice then the 6mm. The 6.5mm STW is actually a very impressive performer. Its best loaded with bullets of 140 gr or more for best consistancy at long range.</p><p> </p><p>The 6mm bore is, in my opinion, to small for the STW class of case capacity. In fact the standard 2.5" long belted magnum is about all the 6mm bore can support and even then a 6mm-284, 6-06, 240 Wby or 6-06 AI will nearly match the larger belted magnum case.</p><p> </p><p>Another problem is getting a 6mm bullet that could handle the launch speed of a 6 STW. That is if your wanting to use a long range match type bullet.</p><p> </p><p>Another very real concern is powder bridging. With stick powders, the 257 STW will on occasion have this problem which is when the powder locks up in the shoulder area of the case as its trying to flow through the neck when burning in the case.</p><p> </p><p>This situation would be dramatically worse with the case necked down to a 6mm neck. If you used only the very slowest ball powder, it could work if you used the very heaviest bullets out there with the very slowest powders available. The problem there is carbon fouling, it would be SEVERE. I would suspect you would need to clean the powder fouling out of the bore every 10-15 rounds to maintain any accuracy at all.</p><p> </p><p>In the end, your 6.5mm STW is a MUCH better idea for a high performance, long range varmint round that is relatively user friendly. Even with this chambering, throat life will be limited.</p><p> </p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 199848, member: 10"] The 6.5mm would be a much better choice then the 6mm. The 6.5mm STW is actually a very impressive performer. Its best loaded with bullets of 140 gr or more for best consistancy at long range. The 6mm bore is, in my opinion, to small for the STW class of case capacity. In fact the standard 2.5" long belted magnum is about all the 6mm bore can support and even then a 6mm-284, 6-06, 240 Wby or 6-06 AI will nearly match the larger belted magnum case. Another problem is getting a 6mm bullet that could handle the launch speed of a 6 STW. That is if your wanting to use a long range match type bullet. Another very real concern is powder bridging. With stick powders, the 257 STW will on occasion have this problem which is when the powder locks up in the shoulder area of the case as its trying to flow through the neck when burning in the case. This situation would be dramatically worse with the case necked down to a 6mm neck. If you used only the very slowest ball powder, it could work if you used the very heaviest bullets out there with the very slowest powders available. The problem there is carbon fouling, it would be SEVERE. I would suspect you would need to clean the powder fouling out of the bore every 10-15 rounds to maintain any accuracy at all. In the end, your 6.5mm STW is a MUCH better idea for a high performance, long range varmint round that is relatively user friendly. Even with this chambering, throat life will be limited. Kirby Allen(50) [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6mm STW
Top