Rebel, we just used a wheel cylinder hone in the drill press, spent about an hour on it. I don't have a shotgun bore mic but near as I could judge by feel of caliper the jug is about .005". That was enough to round up the pattern and shows considerable "central thickening". My own 28 gauge with the same choke cut the same way puts 75-80% of one ounce of sixes in the 30" circle at 25 yards, with about 50% in a 21" circle. Now understand, that is 25 yards, not the "standard" 40 yards. Next time out I will shoot some patterns at 40 but for now I'd speculate it will go between 50 and 60 percent which equates to between improved cylinder and modified. My 28 gauge is only a 30" barrel and didn't pattern well in it's original cylinder bore configuration. The slight jug choke made a world of difference. I think Greenmtnboy only patterned his 42" TVM fowler on turkey head targets so we don't know pattern percentages but the jug certainly put more pellets into the head.
