Robert Hoyt's & Ed Rayl's info are both floatin' around here. if ya do a little search you should be able to dig'em up. if not I'll see if I can find the paper I have them wrote down on this evenin' when I get back from the gunshow.
another cause of the bulge could be the maxi ball moved forward while being carried. if ou are hunting with a maxi ball you have to carry the gun muzzle up at all times. I seen some worked back up to the muzzle. another good habit is after you walk a while to make shore the ball is still seated.
Consider all the above. I bulged a barrel and it now has a very productive use, it holds up some of my tomato plants. Saving a few dollars is not worth any risk to your person or anyone near you should the damaged metal have a catastrophic failure. JMHO (just my humble opinion), yours may be different. If you are ever on a range with me I'd like to know you are shooting a barrel tested to the edge of failure. AND I shoot SML and SAFETY is always 1st!10
10 gauge: as per Robert Ruark, "use enough gun"
"I have a list, and am prepared for widespread civil disorder!" 10 ga
If it doesn't work as is, I am haqving a hard time wrapping my head around boring and or lining the bulged barrel. It is not like it will save you any money over another barrel and the bulge will still be there.
I agree that for a mass-produced rifle reboring or lining offers no real practical advantage over a replacement barrel, as long as you don't fall foul of the 15/16 or 1in. thing. Only experimental inclination or plain cussedness, if applicable, make those processes really worthwhile. If someone has a hand-made modern muzzle loader the priorities might shift.
The outside bulge can easily be reamoved with a belt sander, even a hand-held one, if you are prepared to refinish the barrel.
I'd send it out to have the bore enlarged until it cleaned up, then rifled.
personally I would replace it but, the OP asked about possible fixes so I mentioned my second choice to have it bored out & relined as I think that would be the second safest way to deal with the problem.
I'd replace it too. Too many 'inexpensive' barrels around to mess with relining/reboring, especially if you want to shoot PRB.
|BP||Bronze Point||IMR||Improved Military Rifle||PTD||Pointed|
|BR||Bench Rest||M||Magnum||RN||Round Nose|
|BT||Boat Tail||PL||Power-Lokt||SP||Soft Point|
|C||Compressed Charge||PR||Primer||SPCL||Soft Point "Core-Lokt"|
|HP||Hollow Point||PSPCL||Pointed Soft Point "Core Lokt"||C.O.L.||Cartridge Overall Length|
|PSP||Pointed Soft Point||Spz||Spitzer Point||SBT||Spitzer Boat Tail|
|LRN||Lead Round Nose||LWC||Lead Wad Cutter||LSWC||Lead Semi Wad Cutter|