Machining marks in bore

[skoda]

I just got this barrel in and after cleaning a bunch of dust out of the bore I see that there are machining marks on the lands. Are these normal? I only use patched round balls so there wont be direct contact between the bullet and the lands but it seems that this is something that should not be there. I've never seen that on a modern barrel and I've only seen it on my Spanish CVA pistol which I don't consider more than a cheap lead thrower.

 

[rich pierce]

This is common. You can lap it out if you’re concerned.

 

[Old Hawkeye]

Don't worry about it. My factory barrels have smooth lands, but the grooves are rougher than a gravel road. Doesn't seem to affect how they shoot or clean up.

 

[mooman76]

Like others have said, don't worry about it. Shoot it enough and they will smooth away. You didn't say the make of your gun. I wouldn't expect those marks in the higher end guns but the cheaper production guns, yes. Lap it if you like or even fire lap it.

 

[Tasbay]

Crown looks fine and barrel appears to be good. Let us know how it shoots.

 

[Frontier's]

Lap it. Common thing to find.

 

[skoda]

It's a Rice replacement barrel for a TC Hawken. It's a beautiful rifle but I have a hard time dealing with rifles that don't use stones for ignition so I'm converting it to flint. Thanks for the words of wisdom. This site is the best.

 

[oldwood]

OOOO steel wool on a jag for a couple minutes in and out.........Good to go .. That will cut any sharp edges and the rest will smooth up in time. Just go shootin'.

 

[ord sgt]

What oldwood said is fact. A little elbow grease needs to be liberally applied.

 

[skoda]

Thanks for the tip on steel wool. I was thinking of shooting a few balls patched with sand paper (joke).

 

[russellshaffer]

Wet or dry sandpaper might just work.

 

[The Crisco Kid]

Some JB Bore Polish on the steel wool sometimes works wonders.

 

[bubba.50]

Lube about a half dozen maxi-balls with fine valve-grindin’ compound and fire-lap it.

 

[Eric Bye]

JB Non-embedding Bore Cleaning Compound (from Brownell's and probably other sources) did a very good job rescuing a pitted barrel I own. It takes a while but the results are worth the effort.

 

[skoda]

Hopefully I don' have to rescue a brand new barrel from a custom barrel maker but thanks for the suggestions.

 

[Ragged Edge]

You're likely to find tool marks in any barrel that is not lapped by the maker. In muzzleloaders it makes very little difference in how they operate.

 

[kansas_volunteer]

I polished a T/C Hawken barrel with a proper cast lead lap and fine lapping compound and eliminated machine marks and tight spots. So called lapping with steel wool or any other like stuff will never do as thorough a job. My rifle loads slicker than snot.

 

[Baggy270]

I just got this barrel in and after cleaning a bunch of dust out of the bore I see that there are machining marks on the lands. Are these normal? I only use patched round balls so there wont be direct contact between the bullet and the lands but it seems that this is something that should not be there. I've never seen that on a modern barrel and I've only seen it on my Spanish CVA pistol which I don't consider more than a cheap lead thrower.
View attachment 72317

Looks like all my Savage barrels.....

Dave