I've heard of several sub-1-ounce loads for the 12, but this is the lightest one yet. What wad was used in this recipe? I keep the standard 12-gauge 1-ounce wads on hand, but have standardized on American Select as a propellant for all light 12 loads. American Select falls between Clays and International in burn speed. I'd be interested in trying a 3/4-ounce load for squirrels with 7.5 or 6 shot.
BTW, shot goes for upwards of $50 per bag around here (western Wisconsin). You'd think with all the trapshooters in these parts, competition would have held it to $35, but no such luck. The least I've paid for shot this year has been $40. My club is having the trap outfield mined next spring to reclaim 50 years' worth of lead. Some of that shot is so old that it has oxidized more than 50%, but if the price holds, they'll make a big chunk of change out of it.