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
Hunting
Long Range Hunting & Shooting
Bullet seating deeper under recoil
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="huntaxhunta" data-source="post: 1417223" data-attributes="member: 101742"><p>To exemplify the pressure issue, here's a plot from pressure measurements of how pressure changed with seating depth for one bullet shape (round nose), as it goes from touching the lands on the left, to very deep on the right, all with the same powder charge. You can see that, for this rifle cartridge (.30-06), pressure gets lower as the bullet gets away from the rifling and goes deeper into the neck, up to a point, then as you go still deeper, it rises again. </p><p></p><p>This is thought to happen because the deeper seating allows gas more time to bypass the bullet before the bullet gets to the lands, and that stalls the rise in pressure. But when it gets too deep, it takes away too much of the powder space, so it finally gets to the point that the amount of gas in too small a space overcomes the bypassing effect. The rise in pressure due to seating too deep can be corrected by reducing the amount of powder used.</p></blockquote><p></p>
[QUOTE="huntaxhunta, post: 1417223, member: 101742"] To exemplify the pressure issue, here's a plot from pressure measurements of how pressure changed with seating depth for one bullet shape (round nose), as it goes from touching the lands on the left, to very deep on the right, all with the same powder charge. You can see that, for this rifle cartridge (.30-06), pressure gets lower as the bullet gets away from the rifling and goes deeper into the neck, up to a point, then as you go still deeper, it rises again. This is thought to happen because the deeper seating allows gas more time to bypass the bullet before the bullet gets to the lands, and that stalls the rise in pressure. But when it gets too deep, it takes away too much of the powder space, so it finally gets to the point that the amount of gas in too small a space overcomes the bypassing effect. The rise in pressure due to seating too deep can be corrected by reducing the amount of powder used. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Hunting
Long Range Hunting & Shooting
Bullet seating deeper under recoil
Top