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
Need some help with headspacing for a .300 WBY Mag.
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="mtelkhntr78" data-source="post: 288017" data-attributes="member: 14518"><p>Headspacing on belted magnums can be a bit confusing. You will see many manuals list headspace on a magnum case as the distance from the top of the belt to the bottom of the case. However past experience has shown me that even with that measurement within specs, a cartridge may not chamber properly, be tight, or not at all. Reason being is that the brass may be too long at the measurment of the bottom of the case to a point on the shoulder, ie it has streached or the chamber is cut wrong. Essentially that distance is the same measurement as a headspace measurement on a non-belted case. I hope that wasnt too confusing.</p><p>How to measure it: I recommend the hornady lock-n-load headspcae gauge. It is a little collar set up you attach to your caliper and measure from the base of the shell to the shoulder. RCBS makes a tool for measuring headspace but is cartridge specific and more expensive than the Hornady outfit. Plus the hornady tool you can read hundreds of different calibers. </p><p>Once you determine your HS most guys that do FL size recommend bumping the shoulder back about .001", so it just barely fits the chamber. Myself I try and neck size as much as possible. </p><p>If you are intrested in extending case life have you thought about Annealing? Many many shooters anneal becasue they believe (myself included) it greatly extends case life and improves accuracy becasue of mosre consistent neck tensions. Buffalo Bob has a real decent video on how to do it if your interested.</p><p>Anyhow I hope that helped some.</p></blockquote><p></p>
[QUOTE="mtelkhntr78, post: 288017, member: 14518"] Headspacing on belted magnums can be a bit confusing. You will see many manuals list headspace on a magnum case as the distance from the top of the belt to the bottom of the case. However past experience has shown me that even with that measurement within specs, a cartridge may not chamber properly, be tight, or not at all. Reason being is that the brass may be too long at the measurment of the bottom of the case to a point on the shoulder, ie it has streached or the chamber is cut wrong. Essentially that distance is the same measurement as a headspace measurement on a non-belted case. I hope that wasnt too confusing. How to measure it: I recommend the hornady lock-n-load headspcae gauge. It is a little collar set up you attach to your caliper and measure from the base of the shell to the shoulder. RCBS makes a tool for measuring headspace but is cartridge specific and more expensive than the Hornady outfit. Plus the hornady tool you can read hundreds of different calibers. Once you determine your HS most guys that do FL size recommend bumping the shoulder back about .001", so it just barely fits the chamber. Myself I try and neck size as much as possible. If you are intrested in extending case life have you thought about Annealing? Many many shooters anneal becasue they believe (myself included) it greatly extends case life and improves accuracy becasue of mosre consistent neck tensions. Buffalo Bob has a real decent video on how to do it if your interested. Anyhow I hope that helped some. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Need some help with headspacing for a .300 WBY Mag.
Top