I recently picked up a 24" .22LR barrel on eBay to use for some testing. The seller was honest and said that there was a bulge near the muzzle end of the barrel, but it still shot good. I was not concerned with this since I only needed it for velocity testing and as long as it did not hit the chrony, it was accurate enough for me.
The question that I have is:
How in the world do you manage to get a bulge in the barrel within the last 1.5" of the barrel?
I've tried shooting a 0.225" cast bullet in a .22LR barrel that was cast from wheelweights and managed to get it stuck. Trying to dislodge it with .22 power load (blank cartridge) did not work, but it definitely did not cause a bulge in the barrel.
You have to figure that the odds are that since it's .22LR, the person was not reloading, so he's shooting factory ammo. Will shooting another round in an obstructed barrel exceed the initial chamber pressure from shooting a non-obstructed round? I would *think* that shooting a round in an obstructed barrel would result in the bullet slowing down and stopping as the pressure between the two bullets got close to the initial chamber pressure, but I'm not sure. That sort of thing was not my specialty with respect to engineering.
I repeat, I'm not complaining about the seller. He was entirely honest in his description and I figured it was longer than I needed anyway, so cutting a couple inches off of it was not an issue. I'm just curious how someone could manage to achieve this while using factory ammunition.
And BTW, it's a bull barrel, so the barrel at the chamber is the same as the barrel at the muzzle.
The seller picked up the barrel at a gun show and was not the original owner who somehow managed to bulge the barrel.
It's not a large bulge, but if you run your fingers down the barrel, you do slightly notice it. I probably would not have noticed it if he hadn't put that in the item description.