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
It Only Takes A Few Seconds... Please Help!
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="Buffalobob" data-source="post: 81652" data-attributes="member: 8"><p>Primer pocket enlargement is when the pocket gets so large that the primer will no longer stay in but falls out. What I do is any primer that seats too easily, I tap the case on the case edge sharpley two or three times on the table top to see if the primer will fall back out.</p><p></p><p>How do you get your primer pockets enlarged? By putting way too much powder in the case. When you go two or more grains over max you start getting very high pressures in the case There is no place for the pressure to go except out the barrel or back toward the bolt face. All of this extra pressure causes the primer pocket to get stretched to a larger diameter. With an enlarged primer pocket you can seat a primer wiith just your thumb and then tap it out again on the table top.</p><p></p><p>When I am intent on achieving maximum velocities I will load to the point that a case may only get fireformed with a moderate load and then one shot at maximum load and then into the trash can. This is not too kind on an action either. Actions are made out of metal and can be battered pretty hard by overpressure loads. It is also somewhat dangerous as sometimes things go wrong and you have a weak case that won't hold and it separates and gas and melted primer starts going in bad directions .</p><p></p><p>Right now my load for the 160 AB is too hot to shoot on a hot day and is wrecking brass. But everything is finally nearly set up and I won't need to shoot it so much until late November when temperature will be much better. </p><p></p><p>I would say from the loads that I have seen listed and the velocities that I have seen quoted on this forum that it is not surprising that the poll shows most peoples brass is failing from high pressures enlarging the primer pockets. High velocity is not free. </p><p></p><p>Probably someone else can explain it better. Looks like Eaglet did it already. </p><p></p><p>I will say this. These types of loads are not something to let your children shoot because things do go wrong with high pressure loads. You have do not have much safety. margin.</p></blockquote><p></p>
[QUOTE="Buffalobob, post: 81652, member: 8"] Primer pocket enlargement is when the pocket gets so large that the primer will no longer stay in but falls out. What I do is any primer that seats too easily, I tap the case on the case edge sharpley two or three times on the table top to see if the primer will fall back out. How do you get your primer pockets enlarged? By putting way too much powder in the case. When you go two or more grains over max you start getting very high pressures in the case There is no place for the pressure to go except out the barrel or back toward the bolt face. All of this extra pressure causes the primer pocket to get stretched to a larger diameter. With an enlarged primer pocket you can seat a primer wiith just your thumb and then tap it out again on the table top. When I am intent on achieving maximum velocities I will load to the point that a case may only get fireformed with a moderate load and then one shot at maximum load and then into the trash can. This is not too kind on an action either. Actions are made out of metal and can be battered pretty hard by overpressure loads. It is also somewhat dangerous as sometimes things go wrong and you have a weak case that won't hold and it separates and gas and melted primer starts going in bad directions . Right now my load for the 160 AB is too hot to shoot on a hot day and is wrecking brass. But everything is finally nearly set up and I won't need to shoot it so much until late November when temperature will be much better. I would say from the loads that I have seen listed and the velocities that I have seen quoted on this forum that it is not surprising that the poll shows most peoples brass is failing from high pressures enlarging the primer pockets. High velocity is not free. Probably someone else can explain it better. Looks like Eaglet did it already. I will say this. These types of loads are not something to let your children shoot because things do go wrong with high pressure loads. You have do not have much safety. margin. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
It Only Takes A Few Seconds... Please Help!
Top