twss,
As far as I can tell other than barrel, mag tube and color, the Rhythm and JM are the same.
I finaly shot about 200 rounds throught it this weekend. It shoots sweet and smooth, but was kind of fickle about some old (I mean OLD...even paper hulls) ammo.
And slugs at 40 yard were high and right about 6 inches.
I guess I will stick with the patrol division and my 870 in San Antonio, until I can find some slugs it will put dead center.
Jesse...I could deputize you, and then you could join in, haha.