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
300 win mag is splitting cases.
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="Kevin Thomas" data-source="post: 440998" data-attributes="member: 15748"><p>Got a couple questions here, kinda mixed into one. First off, headspace can always be a problem in regards to misfires, because the dimension we refer to headspace is what limits forward movement of a cartridge within a chamber. Excessive headspace means that the cartridge can (and will) move forward when the firing pin strikes. That means it will reduce or cushion the blow; often resulting in a misfire. Not a good thing.</p><p> </p><p>The T/Cs will have a bit more flex to them than a bolt gun, simply by virtue of their design. This means they are even more dependant on the case/chamber relationship being correct, i.e., no headspace problems. Basically, you want the relationships within that chamber to be as rigid and unchanging under the stresses of firing as is mechanically possible. Some action types result in a somewhat less rigid lockup. This invites other problems to a greater or lesser degree. But it invites them, nonetheless. Ditto for the belted case design. As I said, they served a very specific purpose when they were introduced, but they've hung on due to nothing more than marketing hype and public perception. Thankfully, this is starting to change. Be that as it may, the belted cartridges we still use need some special attention. I'm completely with Bounty Hunter about the neck sizing; it's not an advantage. Full length sizing is the way to go, but don't over do it. By that I mean, pushing the shoulder back more than you need to for easy chambering. If you rely on the belt to headspace and just set the shoulder back as far as the dies will let you, you're going to have problems and your case life will be brutally short. Again, that's why I recommend the bump gages so fervently. Full length size, set the dies using such a gage, and you should see some inprovement here.</p></blockquote><p></p>
[QUOTE="Kevin Thomas, post: 440998, member: 15748"] Got a couple questions here, kinda mixed into one. First off, headspace can always be a problem in regards to misfires, because the dimension we refer to headspace is what limits forward movement of a cartridge within a chamber. Excessive headspace means that the cartridge can (and will) move forward when the firing pin strikes. That means it will reduce or cushion the blow; often resulting in a misfire. Not a good thing. The T/Cs will have a bit more flex to them than a bolt gun, simply by virtue of their design. This means they are even more dependant on the case/chamber relationship being correct, i.e., no headspace problems. Basically, you want the relationships within that chamber to be as rigid and unchanging under the stresses of firing as is mechanically possible. Some action types result in a somewhat less rigid lockup. This invites other problems to a greater or lesser degree. But it invites them, nonetheless. Ditto for the belted case design. As I said, they served a very specific purpose when they were introduced, but they've hung on due to nothing more than marketing hype and public perception. Thankfully, this is starting to change. Be that as it may, the belted cartridges we still use need some special attention. I'm completely with Bounty Hunter about the neck sizing; it's not an advantage. Full length sizing is the way to go, but don't over do it. By that I mean, pushing the shoulder back more than you need to for easy chambering. If you rely on the belt to headspace and just set the shoulder back as far as the dies will let you, you're going to have problems and your case life will be brutally short. Again, that's why I recommend the bump gages so fervently. Full length size, set the dies using such a gage, and you should see some inprovement here. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
300 win mag is splitting cases.
Top