Hodgdon Powder offers the largest selection of quality smokeless propellants for any reloading application. Hodgdon HP38 is a spherical powder that is great for low velocity and mid-range target loads in the .38 Special, .44 Special, and 45 ACP. This high energy powder provides economy in loading. Warning About Smokeless Powder: Do not exceed the loads displayed in the reloaders guide. Never mix any two powders regardless of type, brand, or source. Never substitute any smokeless powder for Black Powder or any Black Powder substitute.