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
Pressure changes with seating depth
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="entoptics" data-source="post: 1752416" data-attributes="member: 104268"><p>My statements were a bit of an oversimplification of course. I'm not judging "peak chamber pressure". I'm judging relative pressure in a load that is not exhibiting signs of high pressure already. In that case, velocity is a direct indicator of "integrated pressure", all other things being equal (e.g. neck tension, charge, primer, etc).</p><p></p><p>I was suggesting that if the OP is pushing the <em>Peak </em>pressure already (e.g. bolt lift, ejector wipe, primer flattening, etc, etc.), then care must be taken with small changes. IMO though, seating a bit deeper (e.g. seating depth tuning) will not radically affect the <em>Peak</em> pressure, it will affect the integrated pressure, due to small changes in the expansion volume.</p><p></p><p>Regardless, to the OP, if you are at max pressure already, proceed with caution when making pretty much ANY change to your load. IMO, getting close to the lands will likely have a more rapid and profound effect on pressure (peak or integrated) than a few 10 thousands of seating further from the lands.</p></blockquote><p></p>
[QUOTE="entoptics, post: 1752416, member: 104268"] My statements were a bit of an oversimplification of course. I'm not judging "peak chamber pressure". I'm judging relative pressure in a load that is not exhibiting signs of high pressure already. In that case, velocity is a direct indicator of "integrated pressure", all other things being equal (e.g. neck tension, charge, primer, etc). I was suggesting that if the OP is pushing the [I]Peak [/I]pressure already (e.g. bolt lift, ejector wipe, primer flattening, etc, etc.), then care must be taken with small changes. IMO though, seating a bit deeper (e.g. seating depth tuning) will not radically affect the [I]Peak[/I] pressure, it will affect the integrated pressure, due to small changes in the expansion volume. Regardless, to the OP, if you are at max pressure already, proceed with caution when making pretty much ANY change to your load. IMO, getting close to the lands will likely have a more rapid and profound effect on pressure (peak or integrated) than a few 10 thousands of seating further from the lands. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Pressure changes with seating depth
Top