My girlfriends s400 carbine is set at around 11.5 ft-lb. Action is standard

I did a 60 shot string last week from a 180 bar fill
- First 5 shots were about 11 ft-lb
- next 5 ramped up to 11.6 ft-lb
- next 40 shots all within 10 fps of eachother, from 780 - 790 (11.4 - 11.7 ft-lb)
- next 10 quickly ramped down again to 10.5 ft-lb where I stopped

Those first 10 lower power shots don't seem to make any difference when zeroing at 25 yards.
So we fill to 180. 10 shots at zero range
Then got a full course worth plus 10 extra shots for stoppages or clearing pellets