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
Tightneck 6-284 question
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: 116025" data-attributes="member: 10"><p>I would agree with UncleB on this one. If you use quality brass like the Lapua hulls, and are designing the reamer for your project, I would not recommend doing a tight necked chamber. That being one that required you to cut 2 to 3 thou off the thickness of the neck.</p><p></p><p>Now taking a very light truing cut just to even up the necks is one thing but this can generally be done by only taking 1/2 thou off the neck thickness.</p><p></p><p>If you have never turned necks before I would highly recommend you go with a chamber design so you do not HAVE to turn your necks. Again, get some dummy rounds loaded up and take some neck diameters and go from there.</p><p></p><p>One thing many do not realize with a really tight necked chamber in a round such as the 6-284 is that you really have to watch neck hardness from fire hardening. They can split very easily once the case necks get a few firings on them even if they are not oversized.</p><p></p><p>This is simply from the thinness of the neck getting brittle and cracking. If you anneal your cases every 3-4 firings this is really not a concern but again, another step.</p><p></p><p>Long ago I had my first true long rang rifle build in 6-284. This was long before I got into building rifles professionally and the smith I was using recommended a VERY tight BR style neck in my chamber. It was cut to only 0.265" in diameter which ment alot of neck turning since there was no such thing as facotry 6.5mm-284 brass then. I was using the old 284 WIn cases and still do to be honest!</p><p></p><p>The rifle is a dream to shoot, a legit 1/5 moa rifle at 500 yards and in good conditions and if I am up to it, a 1/2 moa rifle at 1000 yards.</p><p></p><p>Still, since I have started building rifles, I have build alot of 6-284s and I designed my reamer to require no neck turning using Lapua cases and they will also match this accuracy level and case neck life is dramatically longer without annealing.</p><p></p><p>If your used to turning necks then have at it if you want to but its alot more work then most realize until they get into it and in my opinion, the advantages of a tight neck chamber are over rated inmost cases with the quality of todays brass such as Lapua and Norma hulls.</p><p></p><p>Good shooting!</p><p></p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 116025, member: 10"] I would agree with UncleB on this one. If you use quality brass like the Lapua hulls, and are designing the reamer for your project, I would not recommend doing a tight necked chamber. That being one that required you to cut 2 to 3 thou off the thickness of the neck. Now taking a very light truing cut just to even up the necks is one thing but this can generally be done by only taking 1/2 thou off the neck thickness. If you have never turned necks before I would highly recommend you go with a chamber design so you do not HAVE to turn your necks. Again, get some dummy rounds loaded up and take some neck diameters and go from there. One thing many do not realize with a really tight necked chamber in a round such as the 6-284 is that you really have to watch neck hardness from fire hardening. They can split very easily once the case necks get a few firings on them even if they are not oversized. This is simply from the thinness of the neck getting brittle and cracking. If you anneal your cases every 3-4 firings this is really not a concern but again, another step. Long ago I had my first true long rang rifle build in 6-284. This was long before I got into building rifles professionally and the smith I was using recommended a VERY tight BR style neck in my chamber. It was cut to only 0.265" in diameter which ment alot of neck turning since there was no such thing as facotry 6.5mm-284 brass then. I was using the old 284 WIn cases and still do to be honest! The rifle is a dream to shoot, a legit 1/5 moa rifle at 500 yards and in good conditions and if I am up to it, a 1/2 moa rifle at 1000 yards. Still, since I have started building rifles, I have build alot of 6-284s and I designed my reamer to require no neck turning using Lapua cases and they will also match this accuracy level and case neck life is dramatically longer without annealing. If your used to turning necks then have at it if you want to but its alot more work then most realize until they get into it and in my opinion, the advantages of a tight neck chamber are over rated inmost cases with the quality of todays brass such as Lapua and Norma hulls. Good shooting! Kirby Allen(50) [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Tightneck 6-284 question
Top