SW4350 is the slowest of all the 4350 derivatives. As such, it has broad capabilities in moderate calibers where other 4350 derivatives cannot reach 100% loading density. It also has enhanced capabilities in larger magnum calibers, where other 4350 derivatives cannot reach.
If you seek accuracy, one of the keys is to find a propellant that can “fill the case and seek maximum velocity”. Several shooters have found this relationship to be true with SW4350, and are impressed with its performance. But please understand, SW4350 is not exactly the same propellant as H4350. Ranked in fastest to slowest of the 4350 derivatives: H4350, IMR4350, Accurate 4350, SW4350.
SW4350 has tremendous capabilities across virtually all long-range class and magnum class centerfire rifle ammunition.
Despite SW4350 being an extruded propellant, we have found good flow characteristics through a volumetric powder dump. The grain is narrow, and cut short. While some reloaders insist on weighing each powder charge, we did not find that extra time necessary when loading for accuracy with this propellant