Ramshot ZIP will cover the full spectrum of .45 ACP loading from light cast lead loads to full velocity JHPs. It is a great .45 ACP powder and I get excellent accuracy with my ZIP handloads, and smoke is low. For light loads, WST is low smoke powder also. It burns clean, it just won't get you much performance with JHPs of FMJ. But for bunnyfart loads its excellent. ZIP is similar in burn rate to W231 which a lot of reloaders use. But ZIP burns cleaner and will give you better performance with JHPs and it does very well with low charges using cast lead bullets.