If I understand you correctly, you are asking can RL22 be used with 168 Bergers, or are you asking for load data with that combo?
Reloder 22 can be used, however it is not the optimal powder for that weight bullet. I LOVE that powder with lighter bullets. H1000 is probably the best option for the 160 class bullets. I have a load with RL 22 and 168 Berger, but have to watch temperature. The 22 is very temp sensitive, and pressures can spike quickly.