I use Remington Game Loads in fluid steel guns. The box says 2 1/2 dram equivalent, one ounce. I assume they are under or at 1200 fps. I do not have any idea what the pressure is, but it is the most sensible load available commercially. My 23 flats were all accumulated when Dick's had them on sale for about fifty bucks a flat minus bonus points. Watch for my estate sale.