You're missing part of his point-
the results are awful, try switching loads.
Just because the patterning is nasty with one load doesn't necessarily mean it will be that bad with another.
Before you through out money for a smoothbore or resign yourself shooting only slugs, try a variety of loads.
Mike
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"A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects." -Robert Heinlein