Berry's Manufacturing Superior Plated Handgun Bullets .40 S&W/10mm .401in 180 gr RN 250/ct. They are more affordable than jacketed rounds and will not foul your barrel with lead..SAAMI MAX .40 COL = 1.135"SAAMI MAX 10mm COL = 1.250"Can withstand velocities up to 1250 fps Specifications for Berry's Manufacturing Superior Plated Handgun Bullets .40 S&W/10mm .401in 180 gr RN: Manufacturer: Berry's Manufacturing Bullet Type: Round Nose (RN) Projectile Caliber: .40 Caliber Bullet Quantity: 250 Bullet Package Contents: Berry's Manufacturing Superior Plated Handgun Bullets .40 S&W/10mm .401in 180 gr RN Berry's Manufacturing 45855: Superior Plated Handgun Bullets .40 S&W/10mm .401in 180 gr RN 250/ct