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
Rifles, Bullets, Barrels & Ballistics
Throat erosion and double-based powders.
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: 634258" data-attributes="member: 5302"><p>I know of a military unit building long range match rifles and a new barrel was fit to one. So they gave the rifle and 30 rounds of .30-.338 ammo to some kid to "break in" the barrel. He came back to the unit and a top shooter took it to the 1000 yard range to check it out. Best 10-shot group was well over 2 feet; the previous barrel shot under 7 inches. They later learned that kid shot all 30 rounds in about 3 minutes. Its throat was quite eroded.</p><p></p><p>Note that bullets don't move very fast when they enter the rifling; they only go a couple hundred feet per second at that time.</p><p></p><p>Long bullets wear out barrels the same rate as short ones do. They both wear very little metal off the lands and grooves. Many folks have taken long barrels that have lost accuracy, cut a couple inches off their back end then refit them to the receiver. I've had that done with three barrels and the shorter versions shot just as accurate as the original ones did.</p></blockquote><p></p>
[QUOTE="Bart B, post: 634258, member: 5302"] I know of a military unit building long range match rifles and a new barrel was fit to one. So they gave the rifle and 30 rounds of .30-.338 ammo to some kid to "break in" the barrel. He came back to the unit and a top shooter took it to the 1000 yard range to check it out. Best 10-shot group was well over 2 feet; the previous barrel shot under 7 inches. They later learned that kid shot all 30 rounds in about 3 minutes. Its throat was quite eroded. Note that bullets don't move very fast when they enter the rifling; they only go a couple hundred feet per second at that time. Long bullets wear out barrels the same rate as short ones do. They both wear very little metal off the lands and grooves. Many folks have taken long barrels that have lost accuracy, cut a couple inches off their back end then refit them to the receiver. I've had that done with three barrels and the shorter versions shot just as accurate as the original ones did. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Throat erosion and double-based powders.
Top