While taking advantage of state of the art testing equipment, this high performance ammunition by Underwood is field tested using popular, real firearms that customers are most likely to own out in the real world with all the elements you would experience. If for some reason Underwood Ammunition fails to meet performance expectations, Underwood stands by their product 100% and will make sure the customer is satisfied with every purchase. This ammunition is new production, non-corrosive, in boxer primed, reloadable brass cases. ­This round was developed with a projectile that is soft enough to expand upon impact, but hard enough to not lead the barrel of a of a normal revolver. All non-jacketed lead bullets, whether it may be cast, hard cast, wad-cutter, etc. “smoke” to some degree due to the wax/lube needed in the manufacturing process. With high performance and velocity it is nearly impossible to stop this from happening. Higher chamber pressures, higher velocities, and higher temperatures mean more smoke in this case. All of Underwood Ammo rounds utilize flash suppressed powder so that your vision will not be compromised if it becomes necessary to use your firearm in low light.