Lee Carbide Breech Lock Bushings 4-Die Set .40 S&W/10mm A51778AD LEE. can be used to load the 10mm Auto. Back out the bullet seating die and powder through expanding die 1 3/4 turns. Can also be used to reload the 41 Action Express. The powder through expander and bullet seating die would have to be backed out approximately two turns. The load data included with the dies can not be used with the 41 Action Express it would have to be obtained through one of your favorite powder manufacturers. Specifications for Lee Carbide Breech Lock Bushings 4-Die Set .40 S&W/10mm A51778AD: Manufacturer: Lee Fabric/Material: Carbide Gun Type: Pistol Features of Lee Carbide Breech Lock Bushings 4-Die Set .40 S&W/10mm: Colored spline drive breech bushings for easy die identification Carbide Full Length Sizing Die Bullet Seating Die Powder Thru Expanding Die Carbide Factory Crimp Die Universal Shell Holder Package Contents: Lee Carbide Breech Lock Bushings 4-Die Set .40 S&W/10mm Lee 40 S&W 10mm Auto Pistol Breech Lock 4-Die Set includes colored spline drive breech bushings for easy die identification Carbide Full Length Sizing Die Bullet Seating Die Powder Thru Expanding Die Carbide Factory Crimp Die Universal Shell Holder Powder Dipper and Instructions/Load Data. can be used to load the 10mm Auto. Back out the bullet seating die and powder through expanding die 1 3/4 turns. Can also be used to reload the 41 Action Express. The powder through expander and bullet seating die would have to be backed out approximately two turns. The load data included with the dies can not be used with the 41 Action Express it would have to be obtained through one of your favorite powder manufacturers. LEE91937