Hi BJ72,
No, no filler. With RL22, though there is a bit of space left, the case is filled probably to 80-85% capacity.

Recoil is about 1/2 full power loads by calculations and feels like it as well.

Stay well,
Paul

NRA Life Member
Reloading since 1976
Dont Save the best for last, the smile for later or the "Thanks" for tomorow"