Stupid question about barrel crowns.


PDA






cool45auto
June 5, 2003, 09:06 PM
Does it help any if the barrel on your gun came with or has been crowned? My Neos has a crowned barrel and some other pistols I've looked at have them. Is it worth it to have it done? I swear it looks like you could take an oversized drill bit and do it yourself the way some of the ones I've seen look!

Should I have it done to my Vertec?

If you enjoyed reading about "Stupid question about barrel crowns." here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!
Jim K
June 5, 2003, 09:33 PM
The purpose of a crown is to protect the end of the barrel from damage. The barrel end is very critical to accuracy; if it is not prefect, the bullet will exit one side before the other and be thrown off by the escaping gas on the side that it exits first.

There are tools to cut crowns by centering on a stud in the barrel; crowns have also been cut with a drill bit, or with a round-head bolt and grinding compound. Such methods can sometimes result in a decent crown, but the best way to cut one is on a lathe, using the proper lathe tool.

Many guns, especially target guns, have no crown since the factory thinks the cut end will be more accurate than a crown and that such a gun is unlikely to be damaged. If a gun that has no crown shoots well, I would leave it alone. Sometimes, though, damage can be repaired by cutting a crown or by deepening one.

Jim

mete
June 6, 2003, 07:16 AM
Yes the end of the barrel must be square with the bore and have no nicks or other damage. The crown can be many shapes , flat, 11 degree, stepped, rounded etc.

Skunkabilly
June 6, 2003, 12:08 PM
I have one that came with the Elite II, and it's a :cuss: to clean.

I don't notice any difference but I haven't shot a 92FS extensively, either.

Standing Wolf
June 6, 2003, 10:49 PM
I've seen accuracy improvements in some, but not all the barrels I've had crowned by http://www.magnaport.com

If you enjoyed reading about "Stupid question about barrel crowns." here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!