Dave in Maine, I just had a look at the Sellior & Bellot website;
http://www.sellier-bellot.cz/en/ They are an old company and produce a huge range. Not a lot of that range gets to the U.K. but I have been using their stuff for years. The used to do a 7/8th. ounce 2 1/2 " paper roll crimp 6 1/2 shot felt wad load called the Practice & Vermin cartridge. I still have a few boxes left and they have taken a heap of rabbits over the years. Pity they still don't do them. They shot as sweet as a nut. Lagopus....
