Thread revival part III

I've just done another newly bought 1377.
Bleed hole plugged and no other mods, it's doing 5 ftlbs on 12 pumps with 8.3gn pellets.
It's doing 5.9 fltbs on 14 pumps with 7gn RWS Hobby - that's a problem. I may make a smaller TP for this one.

I wonder how much variability there is between individual guns? I've got three more here which if I do them I'll report back on the range of powers produced.