Unique lights fine with a standard primer. I have used a similar load with 165gr. Meister LFP bullets.
Speer #14 says magnum primers should be used with ball powders that are at or near full case capacity. They found lower SD with the magnum primer. Specifically, I know that it lists using a small magnum primer in .223 Rem loads with W748, H335, BL-(C)2 and maybe others. Since the same powders may be used in the 30-30, the same rules may apply(I don't have the book in front of me).
Hornady 7 says a non-magnum primer is fine with these powders.