Magnus Bullets .45 Colt .452in 255 gr SWCBB 400/Box. This mix gives you a lead bullet hard enough to be fired at 1200 FPS with little or no leading problems in most handguns but will not shatter upon impact with steel targets. Specifications for Magnus Bullets .45 Colt .452in 255 gr SWCBB: Manufacturer: Magnus Bullet Type: Semi Wadcutter Bevel Base(SWCBB) Projectile Caliber: .452 Caliber Bullet Quantity: 400 Bullet Package Contents: Magnus Bullets .45 Colt .452in 255 gr SWCBB Magnus 901: Bullets .45 Colt .452in 255 gr SWCBB 400/Box