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
Tight barrel issues.
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="HSmithTX" data-source="post: 2570005" data-attributes="member: 121677"><p>Assuming you bought it used? First thing I would do is clean it down to bare metal. Get it dead clean, and then work up a load. </p><p></p><p>I would caution you against any kind of lapping or bore polishing. I have one barrel that fouls badly enough that in about 80 rounds it goes from no pressure signs at all to hard bolt lift and flat primers and loosened primer pockets in Hornady brass. The length of the bore is chattered and ugly. The barrel is garbage overall in my opinion, but it shoots very well for 50-60 rounds so I haven't pulled it yet. It also won't group at all until the 5th round after cleaning, after that it stacks bullets. So, nothing to lose right? I went after it with some bore polish, visibly better with the bore scope, the chatter didn't get moved at all but some of the rough edges of the chatter are much less rough. The previous load I had worked up no longer works, it is over pressure and velocity was higher than previously shooting ammo from the same box I loaded before the polishing. It makes sense also, if the barrel is smoother there will be more friction on the bullet increasing pressure and velocity, same as 'breaking in' a barrel and the corresponding 'speed up'. Worked up a load at the previous speed by dropping the powder charge until velocity matched the old load and the pressure signs are gone. Same results though, shoot 5 to get it going, stacks bullets for a while and then the pressure starts coming back. Unless you KNOW what you are doing I would 100% recommend not trying to do anything inside the barrel other than shooting and normal cleaning.</p></blockquote><p></p>
[QUOTE="HSmithTX, post: 2570005, member: 121677"] Assuming you bought it used? First thing I would do is clean it down to bare metal. Get it dead clean, and then work up a load. I would caution you against any kind of lapping or bore polishing. I have one barrel that fouls badly enough that in about 80 rounds it goes from no pressure signs at all to hard bolt lift and flat primers and loosened primer pockets in Hornady brass. The length of the bore is chattered and ugly. The barrel is garbage overall in my opinion, but it shoots very well for 50-60 rounds so I haven't pulled it yet. It also won't group at all until the 5th round after cleaning, after that it stacks bullets. So, nothing to lose right? I went after it with some bore polish, visibly better with the bore scope, the chatter didn't get moved at all but some of the rough edges of the chatter are much less rough. The previous load I had worked up no longer works, it is over pressure and velocity was higher than previously shooting ammo from the same box I loaded before the polishing. It makes sense also, if the barrel is smoother there will be more friction on the bullet increasing pressure and velocity, same as 'breaking in' a barrel and the corresponding 'speed up'. Worked up a load at the previous speed by dropping the powder charge until velocity matched the old load and the pressure signs are gone. Same results though, shoot 5 to get it going, stacks bullets for a while and then the pressure starts coming back. Unless you KNOW what you are doing I would 100% recommend not trying to do anything inside the barrel other than shooting and normal cleaning. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Tight barrel issues.
Top