Ok guys, I am about to the limit of what my H&R Ultra Slug can handle for the 12 Gauge from Hell. To get to near the max potential for the cartridge, I am moving to a Savage 212. However, I am needing to swap the barrel for a thicker and longer option than the factory. The dimensions I am looking for are 1.25" diameter (no taper), 30" long, with a 1-20" twist. Shaw has a barrel that comes close, but the barrel is only 24" long and has a 1-28" twist. I am really needing a longer barrel to squeeze out some extra velocity, and the twist rate of 1-20" will be good for slugs up to 1000 grains.
I am pretty sure Pac-Nor used to make 12 gauge barrels, but with their recent fire, I don't know if they are up and going yet. Does anyone have any ideas of where to look?