Berry's Manufacturing Superior Plated Handgun Bullets .40 S&W/10mm .401in 155 gr RS 1000/cts. They are more affordable than jacketed rounds and won't foul your barrel with lead..40 COL = 1.125"10mm COL = 1.260"Can withstand velocities up to 1250 fps. Specifications for Berry's Manufacturing Superior Plated Handgun Bullets .40 S&W/10mm .401in 155 gr RS: Manufacturer: Berry's Manufacturing Bullet Type: Plated Flat Point (PFP) Projectile Caliber: .40 Caliber Bullet Quantity: 1000 Bullet Package Contents: Berry's Manufacturing Superior Plated Handgun Bullets .40 S&W/10mm .401in 155 gr RS Berry's Manufacturing 59314: Superior Plated Handgun Bullets .40 S&W/10mm .401in 155 gr RS 1000/cts