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
Ramshot Magnum vs. barrel life
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="davewilson" data-source="post: 94341" data-attributes="member: 4491"><p>Dick, i was reading a magazine article quite a few years ago and they were talking about this very issue.graphs were shown just like the one you posted with several different bullet/cartridge combinations.these were actual pressure readings from the testing done at hornady.in each case the peak pressure was at the moment of complete engraving of the lands into the bullet.i found this interesting so i called the sierra hotline, which was fairly new, and they concurred.i can't give you the magazine name or even the year, but it's been a while so last week,while i was on vacation,i called the sierra hotline to see if i remembered this correctly.they seem to agree with me.my third source would be Gerard Shultz of GS custom bullets.he told me this was another major difference between conventional jacketed lead bullets and his banded style.that's why his bullets will get at least twice the throat life.the primer will engage the bullet in the rifling sealing it off and not getting the flame cutting of the throat area that happens getting a jacketed bullet started into the lands.</p><p></p><p>as far as the 35 or 50 or 65k pressure thing.i was just using 50-65k as a general number being that's what most cartridges peak at.if a cartridge peaks at 35k so be it.my point is that the peak pressure,whatever it is,happens getting the bullet completely engraved in the rifling.</p></blockquote><p></p>
[QUOTE="davewilson, post: 94341, member: 4491"] Dick, i was reading a magazine article quite a few years ago and they were talking about this very issue.graphs were shown just like the one you posted with several different bullet/cartridge combinations.these were actual pressure readings from the testing done at hornady.in each case the peak pressure was at the moment of complete engraving of the lands into the bullet.i found this interesting so i called the sierra hotline, which was fairly new, and they concurred.i can't give you the magazine name or even the year, but it's been a while so last week,while i was on vacation,i called the sierra hotline to see if i remembered this correctly.they seem to agree with me.my third source would be Gerard Shultz of GS custom bullets.he told me this was another major difference between conventional jacketed lead bullets and his banded style.that's why his bullets will get at least twice the throat life.the primer will engage the bullet in the rifling sealing it off and not getting the flame cutting of the throat area that happens getting a jacketed bullet started into the lands. as far as the 35 or 50 or 65k pressure thing.i was just using 50-65k as a general number being that's what most cartridges peak at.if a cartridge peaks at 35k so be it.my point is that the peak pressure,whatever it is,happens getting the bullet completely engraved in the rifling. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Ramshot Magnum vs. barrel life
Top