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
Ladder Test Results...need help analyzing.
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="Bart B" data-source="post: 704984" data-attributes="member: 5302"><p>Dan,</p><p></p><p>Has anyone measured bullet exit at the muzzle vs shock wave position to verify it works? Until that's been done, I'll consider the whole idea an interesting theory.</p><p></p><p>18,000 fps for the speed of sound in steel is only one of several claims for it. Others clock it as low as 13,000 fps. Which means, depending on the speed of sound in a stainless steel barrel, muzzle velocity of a 175-gr. bullet from a .308 Win and barrel length from 22 to 28 inches, there'll be from 6 to 11 round trips of that shock wave in the barrel before the bullet exits. I don't think the timing could be precice enough to make it work unless barrel time and muzzle velocity spread varied less than 1/5th percent. </p><p></p><p>Where does that shock wave start from? I don't thing that's been stated. If it's any place other than the head of the case, then there'll be two of them starting out in opposite directions.</p><p></p><p>Interesting reading:</p><p></p><p><a href="http://archive.org/details/philtrans05900167" target="_blank">Vibrations of Rifle Barrels : Mallock, A. : Free Download & Streaming : Internet Archive</a></p></blockquote><p></p>
[QUOTE="Bart B, post: 704984, member: 5302"] Dan, Has anyone measured bullet exit at the muzzle vs shock wave position to verify it works? Until that's been done, I'll consider the whole idea an interesting theory. 18,000 fps for the speed of sound in steel is only one of several claims for it. Others clock it as low as 13,000 fps. Which means, depending on the speed of sound in a stainless steel barrel, muzzle velocity of a 175-gr. bullet from a .308 Win and barrel length from 22 to 28 inches, there'll be from 6 to 11 round trips of that shock wave in the barrel before the bullet exits. I don't think the timing could be precice enough to make it work unless barrel time and muzzle velocity spread varied less than 1/5th percent. Where does that shock wave start from? I don't thing that's been stated. If it's any place other than the head of the case, then there'll be two of them starting out in opposite directions. Interesting reading: [url=http://archive.org/details/philtrans05900167]Vibrations of Rifle Barrels : Mallock, A. : Free Download & Streaming : Internet Archive[/url] [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Ladder Test Results...need help analyzing.
Top