Cheers Pete.

I'll run a tin through it and re-measure.

I'm not upset over it as I had purposely asked Will to go a full coil shorter and to send some extra power washers. I deliberately used the thinnest of the washers - one at the front of the top hat and one between the spring end and the guide, just as extra bearings. So I've got plenty of scope to fit extra / thicker washers.

Cocking effort is very light indeed and the firing cycle very mild.

I don't hunt these days (and if I ever were to hunt again it'd only be rats at short range, so the power output would be fine anyway) and most of my shooting is at close range until I get to a Bash. So, this power output certainly doesn't disappoint (indeed, I half-expected it to be about there), but maybe a nice 10 to 10.5 whilst still retaining good manners would be nice.