[Nigel Buckley]

I would not expect that the skirt not being a good fit to altert things that much, as the blast of air behind the pellet should open/push the out the lead to form good alround seal. i used to shoot 10m match stuff way back in time, and the coaches used to say, its the pellet head that really counts, deform/scratch that and your in trubble big time, the skirt will re-form to the size of the barrel !

I have never put this theory to test though,
But i will one day when i get to the range.

Regards
Nigel