H-4198, N-130, RL-7, H-322, BenchMark, and similar burn-rate powders have all proven useful: like H-4198, the N-130 is usually shot with a "case-full", or, upwards of 34.5 Gr., or, a well compressed charge. Of note, from about 32.0 Gr. up, the H-4198 usually delivers several nice 'sweet-spots'...