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Lined barrel

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I Wouldn’t lap any barrel with out a cause. Lapping compound on a patch isn’t lapping by my definition. I have considerable experience in this and a few things that tell you when a lap may help a bore. Torn patches, tight spots and machine marks can be clues. Lapping will not fix pitting or a significantly rough bore! A lap is cast into the bore to conform to the bore while forming onto a rod for moving it the length of the bore. In this case the bore is rough and has a number of tight spots. All this work can shine up a bore and reduce tight spots. Five ten thousands of an inche is a lot in a bore that a lead bullet is moving threw at the speeds we deal with.
Lined means a tube is installed into a barrel. It maybe rifled or not.
 
Excellent thank you.
What I thought but didn’t want to show my arse on a wrong guess.
I’ll have to re-read the OP now as I presume this procedure (which I have heard of) probably (must?) change the caliber.

EDIT: Okay I didn’t miss it. What caliber before and what now?
 
I Wouldn’t lap any barrel with out a cause. Lapping compound on a patch isn’t lapping by my definition. I have considerable experience in this and a few things that tell you when a lap may help a bore. Torn patches, tight spots and machine marks can be clues. Lapping will not fix pitting or a significantly rough bore! A lap is cast into the bore to conform to the bore while forming onto a rod for moving it the length of the bore. In this case the bore is rough and has a number of tight spots. All this work can shine up a bore and reduce tight spots. Five ten thousands of an inche is a lot in a bore that a lead bullet is moving threw at the speeds we deal with.
Lined means a tube is installed into a barrel. It maybe rifled or not.
So the fired patch tells the story. In breaking in a new barrel is there a benefit in using a harder cast ball to smooth it out? I have a rifle that was made in 1980. It was shot a lot. I only come to that conclusion because the lock had worn out. There were a couple of things wrong with it when I purchased it I discovered immediately. I ordered a new small chambers lock and the rebuild kit for it. A bushing, fly and other. Had a smith fix the lock that was beautifully scribed. Man some of you guys have talent! Anyway the rifle is a great shooter. I forget the name of the barrel next time I have the stock off I’m going to right it down it was a good barrel at the time
 
In this barrel a cleaning patch on a jag tells the story, after a few passes a hole is torn in the patch. A harder ball would be less effective as it won’t expand in the bore as well as a pure lead ball.
Today I stopped lapping and took the rifle out to try some shooting. The bore still isn’t smooth or even but I wanted to check how the rifle is working anyway. The Sharps action is quite interresting with its moving gas plate. This old Shiloh demonstrated why they are highly thought of. It works perfectly and to my casual test the bore shot well. At 50 yards the sights are right on and the first two groups are about two inches each. After that I just plinked. On cleaning I found the expected leading in the bore. I look forward to some 100 yard bench bench shooting.
The barrel was sent at end of February and returned on July 22. That’s how long I was told it would take so I had no problem waiting.
 
In this barrel a cleaning patch on a jag tells the story, after a few passes a hole is torn in the patch. A harder ball would be less effective as it won’t expand in the bore as well as a pure lead ball.
Today I stopped lapping and took the rifle out to try some shooting. The bore still isn’t smooth or even but I wanted to check how the rifle is working anyway. The Sharps action is quite interresting with its moving gas plate. This old Shiloh demonstrated why they are highly thought of. It works perfectly and to my casual test the bore shot well. At 50 yards the sights are right on and the first two groups are about two inches each. After that I just plinked. On cleaning I found the expected leading in the bore. I look forward to some 100 yard bench bench shooting.
The barrel was sent at end of February and returned on July 22. That’s how long I was told it would take so I had no problem waiting.
Thanks for that!
 
Before jumping to any conclusions, I'd shoot it for a while. Even modern rifles with new barrels have a "break in" period. Why should ours be any different?
Agree completely.

Every brand new muzzleloader that I have ever owned, shot a certain way for the first 200 to 300 shots…then things change and You need to re-site the gun. At around 1000 to 1500 shots things change again.

I agree completely, let the barrel wear-in for a bit. It’ll settle out…
 
I have written to Hoyt and included a photo of the bore, we’ll see what he says.
Breaking in a barrel is dealing with the tiny imperfections that most things can have. This is not on that level, as I have explained. Many people may be satisfied with usable but I tend to prefer good or better and will pay for those things. I hold my own work to standards that I rarely achieve. I don’t own fourty inexpensive guns but the few I do keep are as nice as I can get. I’ve learned over the years that good stuff is cheaper in the long run.
 
Received my Sharps back from Hoyt. After the letter I called and talked to him, he had sent me a letter back but it hadn’t arrived. He was very sorry and took full responsibility for the poor work and assured me he would put my barrel at the head of the line. Seems he has been swamped with work and had allowed his tooling to get dull in his rush to catch up.
The bore this time is very nice and has no tight or loose spots. It also has the square rifling and the chamber bushing doesn’t move on its own. On the down side the chamber bushing is not concentric with the bore and there are numerous dings and scratches on the out side of the barrel.
Bottom line the rifling is what his followers claim but rough handling has left it’s mark on this spendy rifle.
 
I have a Bobby Hoyt rebored barrel and it is about the nicest barrel I own. IMHO his work is impeccable but errors can occur, no, will occur from time to time regardless who the craftsman may be. I'll gladly contact him first if I ever have a barrel that needs a little TLC.
 
I have a Bobby Hoyt rebored barrel and it is about the nicest barrel I own. IMHO his work is impeccable but errors can occur, no, will occur from time to time regardless who the craftsman may be. I'll gladly contact him first if I ever have a barrel that needs a little TLC.

I agree with that statement as a mistake can always happen. But the problem seemed to not be acknowledged until it was found, and then it does not seem like a note came back with the barrel the second time stating the present damaged condition, well. I expect a craftsman to take credit for his work and to acknowledge mistakes upfront. I hate surprises. And I also agree it should be worked out between them.
 
These are the first seven shots from a .54 caliber Navy Arms Mr. Hoyt rebored and rifled for me. The twist rate is 1/66" with rounded grooves.

First two shots were sighters. Distance is 50 yards.

oOJUFdp.jpg
 
If you run a tight patch and can feel the roughness then I would do something. That something would be just what you stated. Call the guy and show the pic. He may have you send it back. It could be the liner wasn't as good as it should be.
If the patch runs smoothly then I would still consult with him for verification then shoot it.
I would never work on anything newly done without consulting. Then I would follow their recommendations.
The marks that look rough could just be discoloration from the machining process, who knows.
Lapping with patches or hard leather will only get roughness from small burrs and sharpe edges that shooting it will eventually do. To really lap polish you really need a hard metal jag that fits the grooves so the compound works more effectively. But that's in a perfect world.
I have put a bit made from a file in a dowel rod and with some oil smoothed grooves. Run 300-500 strokes per groove the flip the bit over to the smooth side and polish with fine compound. Even after that it has to be shot a bunch and possibly hot lapped before accuracy consistency is achieved.
I've seen some pretty rough looking bores be nail drivers.
I think they will suggest you shoot it then report back if it doesn't perform.
 
If you run a tight patch and can feel the roughness then I would do something. That something would be just what you stated. Call the guy and show the pic. He may have you send it back. It could be the liner wasn't as good as it should be.
If the patch runs smoothly then I would still consult with him for verification then shoot it.
I would never work on anything newly done without consulting. Then I would follow their recommendations.
The marks that look rough could just be discoloration from the machining process, who knows.
Lapping with patches or hard leather will only get roughness from small burrs and sharpe edges that shooting it will eventually do. To really lap polish you really need a hard metal jag that fits the grooves so the compound works more effectively. But that's in a perfect world.
I have put a bit made from a file in a dowel rod and with some oil smoothed grooves. Run 300-500 strokes per groove the flip the bit over to the smooth side and polish with fine compound. Even after that it has to be shot a bunch and possibly hot lapped before accuracy consistency is achieved.
I've seen some pretty rough looking bores be nail drivers.
I think they will suggest you shoot it then report back if it doesn't perform.
The bore is good this time around he’s pissed that the barrel is now marred something no one wants. From the sound of it this marring is going to affect the overall value. Maybe it can be restored but restoration is not what he was looking for as it too takes away from the esthetic and period correct value.
 
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