Crowning a barrel

[burnse]

Quick question here: If I am having a revolver barrel chopped, is it essential to have it crowned? I don't know how important this is or isn't with black powder. Also, if it matters, I only use Goex, and I have no plans to change that.

 

[alsaqr]

i use a hardened ball bearing with a welding rod attached to crown barrels. The rod is chucked in the drill, the bearing is coated with valve grinding compound, and away we go.

 

[junkman_01]

It is not absolutely necessary. A flat crown can work very well. A rounded crown is less prone to damage. A lot of octagon revolver barrels are flat crowned. The important thing is to get the end of the barrel square with the bore and burr free.

 

[SAA]

Once you're done with the hack saw you have to knock the burs off with a round file.

 

[arcticap]

sam steele posted this photo of the crown of a 2nd Generation Walker revolver:



http://www.thehighroad.org/showpost.php?p=7600695&postcount=3048

 

[Wolfebyte]

never crowned a BP barrel.. I have some modern rifles. I was taught to use a hardened carriage bolt in my drill with valve grinding compound.

 

[sltm1]

A simple crowning tool that works excellently, is the case pointed end of a case reamer. In less time than it takes to tell it's a done deal!! And yes, and improper crown will destroy your accuracy even with a black power gun. The principles are the same as shooting smokeless.

 

[[email protected]]

I don't Believe In Crowns

 

[mykeal]

Good example.

 

[burnse]

what are those four holes?

 

[[email protected]]

They are anti-viberation damping stabilizer holes.

 

[mykeal]

You have no shame.

 

[zimmerstutzen]

don't let him kid you about those holes. He uses a set of nanobot gyroscopic stabilizers near the muzzle of his barrel. Since the batteries are so small, the nanobots must be recharged for every shot. He tells folks that the holes are for a false muzzle, but that false muzzle is actually the recharging device. It takes about a minute to recharge the nanobots and get the gyroscopes spinning, just about the same time it takes him to load the gun for the next shot. They do reduce the shakes when pistol shooting and help hold the gun from flinching when shooting. Those holes are for the recharging pins. I understand that Dr. McElroy at the Verazano Laboratories in Olympia Washington has found a way to use the same miniature gyroscopes in carbon fibered arrows and developed a miniature light direction control so a laser can guide the arrows to the intended target. The expected retail price of those arrows is expected to be about $370 a pair. Cabelas has already paid a hefty unspecified price for the exclusive marketing rights.

 

[[email protected]]

Well really you are wrong on my pistol. If you really want to know the truth
of the matter, There is a photo light sensor in each hole. The wire is running
down to a switch in the trigger sear. When the pistol is pointed at a light
surface such as a white or light colored paper it won't fire. When it "sees" a
black area such as the black bullseye on a target then the light sensors trip
and closes the circuit and the trigger will release the sear and the gun will fire
And all this time you all thought the wife and daughter and I were super shots
How do you think we shoot like we do?? Think about it.

 

[burnse]

I can't wait to get my own nanobot-enhanced, light energy-fired ultra-pistol!!! I don't think I'll carry my pistol after all, then. I may just keep it in my glovebox. The one in my Moller Industries Skycar M400 - it seems the most fitting place, I think.

 

[zimmerstutzen]

Wait a minute, it won't fire at a white or light colored target but it will at a black target?. Do you realize how politically incorrect that becomes? I suspect you will be hearing from the NAACP. Al Sharpton is probably setting up a press conference as I type this.

 

[Smokin'Joe]

Whatever the purpose you can buy one on Auction Arms.

http://www.gunauction.com/search/displayitem.cfm?itemnum=10038897

 

[SAA]

Wait a minute, it won't fire at a white or light colored target but it will at a black target?. Do you realize how politically incorrect that becomes? I suspect you will be hearing from the NAACP. Al Sharpton is probably setting up a press conference as I type this.

Don't jump to conclusions. All bad guys wear black clothes. (Haven't you ever watched Westerns?)

 

[rcmodel]

Seriously, those holes are for a false muzzle.

Used to start the bullet down the bore of a muzzle loading target rifle.

So you don't ding or wear out the real crown with the ramrod.

rc

 

[scrat]

If you guys are interested in seeing how a barrel is crowned. Watch this video around the 3 1/2 minute mark the guy starts doing the crowning of the barrel.

http://www.youtube.com/watch?v=Z-y8lNlnLMM&feature=relmfu

By the way this is a real crowning

BEST CROWNING VIDEO
http://www.youtube.com/watch?v=-Xpzv1Spsnk

watch it learn from it then fix your barrels

 

[scrat]

proper crown

 

[burnse]

So, from what I gather so far, crowning a barrel for a caplock revolver is sort of a "do it, if you want" thing?

 

[arcticap]

Here's photos of the crown of my Pietta Remington Target Model. A muzzle loading rifle is loaded through the muzzle while the balls only exit from the muzzle of a C&B.
Target crowns of modern target rifles are often recessed to protect the rifling. And a small amount of chamfer eliminates any burrs.

 

[scrat]

So, from what I gather so far, crowning a barrel for a caplock revolver is sort of a "do it, if you want" thing?

From what i have seen not just in black powder but others a guy will cut a barrel then file the rough edges and say its crowned. When its not. If you watch that video i posted you will see a proper crown being done. Look at any production barrel you have you will see there are certain angles on different areas. Does this mean a file will not work. NO. however if i do the work i for sure am going to make it Right and using a file and saying "look its crowned" will not happen. there is a difference look at the pics i posted versus others i will post a pre crown in a minute you will see it looks similar to what others have posted as being crowned.

 

[scrat]

Doing this

to get this

and saying your barrel is crowned IS not correct.
There are many tools needed to properly crown a barrel. Here is just one step

Lastly this is a proper crown