Pete,
Found that out by complete accident last week, (didn't do me any bloody good....
As for Co2, tried it with my EB22 - can hardly hit the damn card never mind the Bull........ (but if we have a category, I'll join in.)
And how about one for the BB's then I can use my PPK
I'll have one in all 4 groups (sorry Paddy.) then, that will be interesting...