porting barrels????

[Just1Mor]

So i have been thinking about porting the barrels of some of the guns i have but not sure who i would go about it and what needs to be done to the inside of the barrel after the porting is cut. I do have a mill so thats what i would be using.

[nanuk]

you could probably do a reasonable job with a drill and an end mill.

then lap the area gently with some fine grit?

[Just1Mor]

thats what i was thinking but was not sure. would you recomend just lapping the entire bore while im at it?

[akajun]

I can tell you from experience in drilling gas ports on barrells that any bur you kick up in drilling a barrell will quickly disappear upon firing. If your that worried about burrs, Stick a bullet in the barrell under your hole. I used to do this till I learned better.

[bigfoot]

like akajun said, couple shots thru it an no burrs!!! I made a drill jig that clamped over my barrel of my 11/87 that works well, it took some of the recoil away, then had to trim the recoil spring, but very happy how it turned out!!
bigfoot

[Cap'n Morgan]

Like others have said, any burrs will quickly disappear after a shot or two. I used to ream the holes after drilling, but it is not necessary. These days I use a CNC mill with a controlled indexing head. That way I can place the holes in a row between the lands in the rifling, following the twist - looks rather snazzy ;-)

[nanuk]

Cap'n, now THAT is a "Sazzy" idea for sure!

[Just1Mor]

that is a good idear

[targetshootr]

Porting usually makes the value of guns plummet. Something else to consider.