[Silver Pigeon III]

Chilled shot is more than adequate for skeet, 16yd and doubles trap, and the majority of my sporting clays shooting. Magnum shot will pattern better than chilled but in the smaller shot sizes used for clay sports it really doesn't seem to be an advantage until yardages are really increased, (handicap trap, long SC presentations 40-50 yds+) and could be a slight disadvantage in close up shooting. If the price difference is negligible I would use the magnum shot, but don't spend alot extra unless you feel you need it.