Gunsmithing Rifle crown damage/ burr ??
- Thread starter NVScout
- Start date
That’s what he said ..... seems crazy to even waste bullets , time , powder ect..... knowing it has a burr or at the very least not a clean cut crown !
3-5 shots will be enough to tell if its shooting well......if the gun shoots well, dont dick with it......if it shoots like shit, have him recrown it.
just because a crown is not perfect doesnt mean it wont shoot.
honestly that doesnt even look that bad
I understand that for maybe a off the shelf $500 rifle, but when you pay the premium for a top shelf smith to chamber and crown I guess I just expected a perfect job ?!?
do you care about perfect appearance or perfect shooting?
i mean do what you want......but personally, ide take it to the range and at least run a few rounds through it.......if i find its shooting bughole groups, i dont care how that crown looks, im not touching it.
You could try the Qtip test first before shooting it. It costs as much as a Qtip and takes about 30s of time.
Take a Qtip and "fluff" it out to make it whispy.
Slide it into the bore and ever-so-slightly lay it against the inside of the bore. Retract the fluffy Qtip and see if the mark shown drags fuzz. If it does, ask for a recrown before shooting it.
Take a Qtip and "fluff" it out to make it whispy.
Slide it into the bore and ever-so-slightly lay it against the inside of the bore. Retract the fluffy Qtip and see if the mark shown drags fuzz. If it does, ask for a recrown before shooting it.
I thought about that as well . It’s hard to see in the pic but it looks like the edge left when cutting something with a chop saw. It doesn’t grab from the inside but if I go outside to the center of bore it does grab . This would be the second time it has happened from this smith. The first time I had horrible velocity spreads and saw the burr, I used the brass lapping tool from brownels and the spreads came way down but accuracy wasn’t amazing. That rifle also had chamber issued (NK too tight ) so I’m not sure if the brass lapping tool really mattered ?
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I’d start my letting your smith know that is not how you were expecting it to look. If you are paying for quality work, it should look quality.
If it is un-fired, then what is all that tan-ish gray-ish crap on the crown? Inquiring minds want to know.
Is this your first Lilja tube?
-Nate
I doubt that barrel will shoot. That looks all kinds of wrong to me. I expect my crowns to at least look perfect to the naked eye.
I routinely thread and put 11deg crowns on used rifles I buy (even before shooting them), and none of them have come back looking like that. No magnification is necessary. You can plainly see it, so I would expect it to have a serious impact on shooting. I'd just be done with that guy and take it to a different smith for a re-crown, which is $50 at my LGS or $100 for a thread and crown. Well worth it. While your at it have him go over the rifle to see what else is fugged up. Reminds me of a certain hide video about a certain FL precision rifle maker...
All internet BS aside, if you're paying for a built rifle it should hold sub MOA for a 30 shot group with tuned cartridges, and you should be able to easily cherry pick 3 shot groups to make you look like the winner of The World Bench Rest Championship to your internet friends...
I routinely thread and put 11deg crowns on used rifles I buy (even before shooting them), and none of them have come back looking like that. No magnification is necessary. You can plainly see it, so I would expect it to have a serious impact on shooting. I'd just be done with that guy and take it to a different smith for a re-crown, which is $50 at my LGS or $100 for a thread and crown. Well worth it. While your at it have him go over the rifle to see what else is fugged up. Reminds me of a certain hide video about a certain FL precision rifle maker...
All internet BS aside, if you're paying for a built rifle it should hold sub MOA for a 30 shot group with tuned cartridges, and you should be able to easily cherry pick 3 shot groups to make you look like the winner of The World Bench Rest Championship to your internet friends...
Second time from same Smith?
If I built anything with a bur like that it would have been an imidiate rejection from QC .
Being so obvious on the outside, wondering what care was taken while reaming the chamber?
The surface also looks bad, like cut with a dull tool, maybe you should bore scope the other end.
Have you sent those pix to the (smith) ?
It's correctable but you shouldn't have to eat it.
I have ran 10 ft chop saws with a new blade at proper speed with coolant and had better looking cut surface, just saying!
If I built anything with a bur like that it would have been an imidiate rejection from QC .
Being so obvious on the outside, wondering what care was taken while reaming the chamber?
The surface also looks bad, like cut with a dull tool, maybe you should bore scope the other end.
Have you sent those pix to the (smith) ?
It's correctable but you shouldn't have to eat it.
I have ran 10 ft chop saws with a new blade at proper speed with coolant and had better looking cut surface, just saying!
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I sent the pics and told him it’s plain as day. He said just shoot it and see what it does. I don’t agree with that, if it has a burr .. fing fix it. Then I got the whole I’ve done thousands this way and your the first to complain or have multiple issues ?!
Looks like the tan stuff is residue from some type of cleaner maybe. Looks like the damaged part of the crown could have come from a cleaning jag being pulled back through the muzzle and catching the edge. I do think I would shoot it and see how it groups. I bet you would be surprised.
Even if it did shoot okay, I'd still want it fixed. How would you ever know if it could possibly shoot better with a proper crown job?! I'm pretty anal, so I would never be okay with getting a new rifle from a smith and finding things like this.
I am pretty surprised at all the people that recommend just shooting it to see how it does. That's like buying a new car and it shows up with a big scratch in the paint, and the salesman goes "take it for a drive first". Sure the engine still roars, and the scratch doesn't affect the drivability, but you paid for a new car, and it came with a defect... same goes for rifles for me. Your paying for a complete product, not just a tube that can shoot well.
I am pretty surprised at all the people that recommend just shooting it to see how it does. That's like buying a new car and it shows up with a big scratch in the paint, and the salesman goes "take it for a drive first". Sure the engine still roars, and the scratch doesn't affect the drivability, but you paid for a new car, and it came with a defect... same goes for rifles for me. Your paying for a complete product, not just a tube that can shoot well.
This smith claims to have built thousands like that!
All his customers would haul ass!
Refusing to fix a defect?
Sounds like AAC trained him.
I would put his name on this site so the rest of us dont waste time and money with him.
After building thousands he didn't learn a damn thing!
All his customers would haul ass!
Refusing to fix a defect?
Sounds like AAC trained him.
I would put his name on this site so the rest of us dont waste time and money with him.
After building thousands he didn't learn a damn thing!
It's your money and it obviously bothers you..........................have your smith make it right!
That is exactly what he uses , he said that they change out the bits every 10 crowns.
I was trying to give credit to the fact that the pictures can make things look worse than they are but if the thing drags a fingernail it's worrisome.
Take it back and request it to be fixed without taking it to the range.
If that doesn't work shoot me a PM, we will fix it for the cost of round trip shipping.
I’ll definitely keep you in mind. I do t know if you remember or not but I called you on the first one and was asking if you broke the edge on crowns ? Thank you for the offer.
DAYYUM !!!.......Screamin' deal from an upstanding guy ! And, someone that knows their stuff ! You'd be crazy to not take Josh up on his offer.
Warning; You're being sucked in by him. Once complete, you'll probably never go anywhere else. I don't know him personally, but any business person that is conscientious enough to clean up someone else's mess for free is going to get a very long, hard look from me.(If I was the receipient of that barrel/build, the first that would send me into orbit would be the gawddam tool marks on the crown. What the hell did he cut that with ? A dull cereal spoon ? Jesus, cut it with a sharp tool, high speed, slow feed, low cut. Then, go back over it with crocus cloth, then polishing compound, remove all tool marks and make it shine. That's all before you even get to the point of cleaning of the crown/muzzle/bore intersection. That's a radiused brass rod, grinding compound, progressively finer, then polishing. Eff'ing guy took zero pride in his work). But.....that's just me.......
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I do remember having that conversation with someone a couple weeks ago, I had no idea who it was but it seemed like a phone call someone might make if they were trying to figure out what to do in a situation like this...
Anyway, if we can assist just let me know. Sometimes I don't get to the forum for a couple of days so if you don't hear back from me for 48 hours I'm not ignoring you I just didn't see the PM. Give us a call instead.
Go with Bohems offer, he obviously knows his stuff.
I have ran some lathes and not done much better admitted, because I'M not a lathe guy,
but never tried to pass off work that looked that bad.
Working a lathe is not rocket science
, but it is a fine art if done well, care in the details is everything.
Either master the art or get out of the way!
I ran a lot of manual and cnc machines, very well but the lathes just intimidated me, one wrong move you got toast!
Hoist one for Bohem!
I would have him check the other end for tolerance as well.
If you can get your money back that may be a better option, send it to Bohem instead?
I have ran some lathes and not done much better admitted, because I'M not a lathe guy,
but never tried to pass off work that looked that bad.
Working a lathe is not rocket science
, but it is a fine art if done well, care in the details is everything.
Either master the art or get out of the way!
I ran a lot of manual and cnc machines, very well but the lathes just intimidated me, one wrong move you got toast!
Hoist one for Bohem!
I would have him check the other end for tolerance as well.
If you can get your money back that may be a better option, send it to Bohem instead?
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@NVScout 's barreled action is back on it's way home, arrived EOD yesterday and went back out this morning.
Enjoy!
Enjoy!
I'm sure he put it on the lathe, dialed it in, and cut a new crown. Probably wouldn't have to remove more than 0.005" of material to clean it up perfectly.
Attachments
So here we go.
A bright shiny, concentric crown!
Done by a real lathe man.
Barrells are proprietary in hardness ect. You can't just dial up what the book says, you have to wing it.
Adjusting speeds and feeds is an art to make it come out perfect.
Using a sharp tool and some coolant should be a given but the first attempt seemed that some did not get it?
Would have a high confidence its right now got out the readers and blew up the shot, looks perfect!
Good job Bohiem, send me a pm on services please. .
A bright shiny, concentric crown!
Done by a real lathe man.
Barrells are proprietary in hardness ect. You can't just dial up what the book says, you have to wing it.
Adjusting speeds and feeds is an art to make it come out perfect.
Using a sharp tool and some coolant should be a given but the first attempt seemed that some did not get it?
Would have a high confidence its right now got out the readers and blew up the shot, looks perfect!
Good job Bohiem, send me a pm on services please. .
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