UPS charges a Hazardous Material Handling Fee of $28.50 for powder and primer shipments. To keep shipping costs to a minimum, powder and primers may be shipped together. Total powder weight cannot exceed 48 lbs. per shipping box. Total primer variety cannot exceed three types. Total shipping box weight cannot exceed 70 lbs. A Hazardous Material Fee per shipping box will be applied to all powder and primer shipments. If more than one hazmat fee applies you will be contact by email or phone. Hazardous Materials cannot be returned.