OK, Well having been rumbled straight off that all is not well , across the chrono the average by magazine.

1 = 9.22 ftlb, 2 = 9.70 ftlb, 3 = 10.05 ftlb, 4 = 10.39 ftlb, 5 = 10.69 ftlb, 6 = 10.91 ftlb, 7 = 11.30 ftlb, 8 = 11.35 ftlb, 9 = 11.50 ftlb, 10 = 11.57 ftlb

outright minimum 8.90 ftlb, outright maximum 11.79ftlb (2.89ftlb spread)

each individual magazine was actually pretty consistent, every one the velocity spread was single figure fps, 9fps to 3fps across the 8 shots

Fill pressure - start 230bar, after mag 5 180bar, end 125bar.

Oh & just to make it really interesting 7 mags were FTT 20gn, 3 mags at random were JSB 25.4gn