I shoot bell target every week, with both the Lincolnshire & Nottinghamshire leagues. With our leagues, yes they are scoring rings, the scoring is, 5.5 for a bell, 5 for the inner ring, then 4, 3, 2. to us, a bell is a bell, so you don't need a clean target face, you can go in off the rim, also we have no power limit other than under 12ftlb.
You can see on my target i use Tipex, but club targets use the oil based "paint" which doesn't set.
We have various categories, rifle, springer, pistol, as well as male, female junior, veteran, if i can offer any further help please contact me