ORIGINAL: Wingbone
I'm a big fan. I've got the regular Undertaker. I get excellent patterns with #6 and #4 lead shot.
Same here, I have one on my 20 gage pump that patterns a softball at 30 yards.
ORIGINAL: stretch56
I tried one in my Winchester 1300 last year it thew a nice pattern but it shot low & left about 8 inches.
Mine shot level and 4" to the right, I simply adjusted my front sight to compensate. My pump has Hi Viz rifle style FO sights, which greatly improved my accuracy in general.