Hunting Washington Forum

Equipment & Gear => Guns and Ammo => Topic started by: Coasthunterjay on May 11, 2009, 07:56:22 PM

Title: barrel crown?
Post by: Coasthunterjay on May 11, 2009, 07:56:22 PM: Just wondered what your guys opinions are on them.

I have heard there very important either way.....Does anyone know where i can get a crowning tool? are they universal?
Title: Re: barrel crown?
Post by: ICEMAN on May 11, 2009, 08:09:18 PM: Not that I have done it yet....but was looking at my beloved .270 and it is getting a bit ugly and pitted....

http://www.lasc.us/Brennan_CrownBarrel.htm

How To Crown A Rifle Barrel

The last part of the gun that the bullet sees is the end of the barrel, called the crown. The crown should have no nicks or dents or holes or any damage and it should be perpendicular to the bore. You should examine the crown with a magnifying glass.

Crowning the barrel should only be done when it is needed, when there’s an obvious defect.

Crowning a little won't make the gun shoot a little better; it's a case of good or bad, a damaged muzzle or undamaged muzzle.

I crown a barrel only when the damage is obvious.

Try to avoid crowning your barrel.

If the barrel must be crowned, get a competent gunsmith to do it.

If you must do it yourself; here's how to do it.

GO EASY, A LITTLE AT A TIME! Get some fine valve grinding paste from the auto parts store and a round head slotted brass screw from the hardware store. A quarter inch round head brass screw has a head diameter of .450” and is suitable for calibers up to about 35. Above that caliber use a 3/8” screw. Chuck the threaded end of the screw in an egg-beater hand drill or an electric hand drill, put some valve grinding paste on the round head of the screw, and go to work on the muzzle. Move the handle of the drill around in a circular motion while grinding. Clean frequently, and inspect the muzzle with a magnifying glass under a good light. Stop when the end of the rifling is clean and free from damage.
Title: Re: barrel crown?
Post by: WDFW-SUX on May 11, 2009, 08:09:24 PM: The crown on the barrel is the most important part on a rifle for better or worse......get a really really good smith to re crown your gun. :twocents:
Title: Re: barrel crown?
Post by: G.R.K on May 11, 2009, 09:07:56 PM: Here's one from brownells.

http://www.brownells.com/aspx/NS/store/productdetail.aspx?p=7718&st=&s=
Title: Re: barrel crown?
Post by: Coasthunterjay on May 12, 2009, 05:47:57 PM: DUDE you guys rock.....I love DIY.....im gonna do it to a 22 i have thats busted and torn apart. Its completely weak sauce when it comes to accuracy and didnt cost much so im not worried about messing it up...

Working in thousandths is my life so it should be farely easy

Thanks guys...Was having difficulty locating the info....!

:tup:
Title: Re: barrel crown?
Post by: ICEMAN on May 12, 2009, 07:39:23 PM: Try Googling: "How do I crown a rifle....?" :chuckle:
Title: Re: barrel crown?
Post by: bigd9247 on May 12, 2009, 07:40:08 PM: check out this demonstration on crowing a barrel made by Larry Potterfield the CEO of MidwayUSA.

I have never tried this, but from what I've read this method does work for fixing pits or small burrs on the rifle crown. If your crown needs more extensive work, then you should probably buy a crowning tool.
Title: Re: barrel crown?
Post by: Coasthunterjay on May 12, 2009, 11:17:17 PM: well i googled away iceman and i found a crowing tool kit that looks alot like a tool we use in aviation so i deffinantly have the idea down...now i just have to save up....150 bucks for the tool is a little much right now...

but i can deffinantly see myself buying it in the next couple months....

thanks again guys...and ill watch the video later....wife wants me to try to go to bed....goodnite all...
Title: Re: barrel crown?
Post by: dbllunger on May 13, 2009, 09:31:06 PM: For a 150 bucks you could pay a gunsmith. Depends on how bad it is. Personally if it was not affecting accuracy (probably not in reality) I would leave it alone. I have and have seen many with dings in the crown, but it does not affect accuracy. Remington has many many guns with a reversed or just rounded crown that is not cut to or recessed. I have seen bad crowns from poor cleaning techniques, but I think the accuracy was affected because of the damage to the rifling. Take the gouge away from the actual rifling, and the only thing that is affected is the expanding gas outside the barrel and behind the bullet. Unless you have a rifle with single digit accuracy it wont show. Again just my opinion.