Porting your own barrel
06-09-2006, 06:17 AM
#1
Nontypical Buck
Thread Starter
Join Date: Feb 2003
Location: Pa
Posts: 4,647
Porting your own barrel
Know this guy that works in a armory... Anyhow he orders this barrel porting gaget... He told me he was going to port his own barrel... the gun is a Marlin bolt actionslug shot gun. with rifeling in the barrel... He said that all he did was put the jig on the barrel and start drilling holes...
The job looked ok but do you think this would affect accuracy???
The job looked ok but do you think this would affect accuracy???
06-09-2006, 03:14 PM
#2
Join Date: Feb 2003
Location: Blissfield MI USA
Posts: 5,293
RE: Porting your own barrel
I would think you would have to polish the barrel when you were done to get rid of any burs. I might try it on a smooth, but I don't know about a rifled barrel.
It wouldn't be worth the risk of ruining a gun to me, that is for sure. I have shot ported shotguns, and while it helps it is not anything overly dramatic. I think you could accomplish the same thing with a really good recoil pad and adding some weight.
Paul
It wouldn't be worth the risk of ruining a gun to me, that is for sure. I have shot ported shotguns, and while it helps it is not anything overly dramatic. I think you could accomplish the same thing with a really good recoil pad and adding some weight.
Paul
06-09-2006, 03:45 PM
#4
Join Date: May 2003
Location:
Posts: 198
RE: Porting your own barrel
There is lots of hype out there about porting and muzzel brakes. I have been experimenting with brake design for 15 years and have even enlisted the help of an engineer who did supper sonic wind tunnel testing and found out some very intresting things. First and most important is that angled ports and such do not help at all. Gas moving above the speed of sound does not like to turn corners so all we are concerned with is the frontal areas of the holes. The speed of sound does go up with tempriture however this has little effect on the gasses inside a barrel. The biggest reason the porting on a shot gun barrel does so little is the barrel is thin enough that you have very little frontal area for the gas to work against. As for trying to do it on your own, unless you are a machineist and know about stress and pressures it would be best to farm the job out to some one who does or you at best could mess up your gun.
06-09-2006, 05:17 PM
#6
Giant Nontypical
Join Date: Mar 2006
Location: ****ifornia
Posts: 5,052
RE: Porting your own barrel
I just got my 1100 done (smooth bore) and it help with barrel jump. Not much for kick though. I would do it myself anyday of the week. I sent this one to a gunsmith just to see how many holes, size, angle, etc... I would definatly to do myself on a smooth bore, as for a rifled barrel, just look in Cabelas and get a Comp-N-Choke choke tube. I have heard great things about them for slug guns.
06-10-2006, 07:49 AM
#7
Nontypical Buck
Join Date: Feb 2003
Location: Body in SE WI, mind in U.P.
Posts: 4,781
RE: Porting your own barrel
I wouldn't touch a shotgun barrel myself. They are made as thin as possible to save weight and it doesn't take much to screw one up and make it dangerous to shoot.
