jsb monsters

i have been waiting for you guys to post some numbers to help me get started with monsters, but i have not heard much. i know that it has been butt-ass cold across the whole us, but it finally broke around here and made it to forty. i was shooting some monsters for the first time for first attemps at accuracy. the first thing i noticed was monsters like to go fast. i had my gun at 30 fpe, that is what i usually shoot at, and at 55 yards the group was around 4 to 5 inches. then i switched out my valve stem to my 50 fpe and the group went down to 1.25 inch. they were going about 925 fps. i know i could probly shoot better but it was cloudy and muddy as hell but calm wind. but i was wondering what velosity you guys were getting the best groups at? and with this pellets shape i bet it would do good even if you get over 1000 fps.