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
6.5 WSSM Dies??
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="Mikecr" data-source="post: 145095" data-attributes="member: 1521"><p>Basic wildcating:</p><p>#1 Measure YOUR brass, and consider how your going to change it. Measure your bullets, put a dummy round together.</p><p>Don't let anything slip to the abstract or heresay.</p><p>#2 Fill out a reamer print and send it to Pacific with payment for a finish reamer, and headspace gauge.</p><p>#3 Have your smith chamber with your reamer, including your seating die, if he can.</p><p>#4 Have JLC Precision make you a bushing/body die with your reamer.</p><p></p><p>Things to consider with this round: </p><p>The brass will likely measure ~.0195 thick at the necks. Thats .039+.264=.303 so it won't have clearance in a .303 chamber neck without turning.</p><p>You need to turn it anyway, as neck tension is all over the place with brass this thick. High tension = High ES</p><p>You will find that brass so thick is difficult to predict in sizing. Alot of springback. In fact standard expander &amp; turning madrels don't work well with this brass. So it's a challenge to turn.</p><p>I have one and really like it. But a standard 260 is a whole bunch easier. I'll admit that.</p><p>It has great potential, it's just that Winchester apparently had no hopes for it other than marketing when they chose to form WSSM brass from their WSMs. Huge screwup in my view. But only their 223wssm will go down as the biggest disaster in cartridge design -ever. Regardless of sales.</p><p></p><p>I turn mine. They measure .290 loaded for a .291nk chamber. I improved the shoulders and body a bit, for the capacity I desired. My ES is ~10fps. It's plenty accurate with 139Lapuas. </p><p>But I don't compete or anything.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 145095, member: 1521"] Basic wildcating: #1 Measure YOUR brass, and consider how your going to change it. Measure your bullets, put a dummy round together. Don't let anything slip to the abstract or heresay. #2 Fill out a reamer print and send it to Pacific with payment for a finish reamer, and headspace gauge. #3 Have your smith chamber with your reamer, including your seating die, if he can. #4 Have JLC Precision make you a bushing/body die with your reamer. Things to consider with this round: The brass will likely measure ~.0195 thick at the necks. Thats .039+.264=.303 so it won't have clearance in a .303 chamber neck without turning. You need to turn it anyway, as neck tension is all over the place with brass this thick. High tension = High ES You will find that brass so thick is difficult to predict in sizing. Alot of springback. In fact standard expander & turning madrels don't work well with this brass. So it's a challenge to turn. I have one and really like it. But a standard 260 is a whole bunch easier. I'll admit that. It has great potential, it's just that Winchester apparently had no hopes for it other than marketing when they chose to form WSSM brass from their WSMs. Huge screwup in my view. But only their 223wssm will go down as the biggest disaster in cartridge design -ever. Regardless of sales. I turn mine. They measure .290 loaded for a .291nk chamber. I improved the shoulders and body a bit, for the capacity I desired. My ES is ~10fps. It's plenty accurate with 139Lapuas. But I don't compete or anything. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
6.5 WSSM Dies??
Top