Bruce,
I use 18 grains of Clay Dot with 7/8 oz. According to Alliant's web site this load is right at 1200FPS and between 8,000 and 9,000 lbs. I use this load in all three of my Parkers. All are 12 GA. one is Laminated Steel and one is Damascus. Been using this load for at least 5 years.
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