Buffalo Bore loads their ammunition up to maximum SAAMI specifications, which delivers devastating performance on a wide range of game. Please note that this ammunition is not intended for older guns. It is made for modern firearms only, as some of the ammunition could damage older and weaker firearms. This ammunition is new production, non-corrosive, in boxer primed, reloadable brass cases.  In order to make this cartridge meaningful for self-defense, Buffalo Bore designed hard cast (not soft) bullets that will not deform on impact and will maintain their flat nose profile as they penetrate through muscle and bone and because of their flat nose, they crush (not slip and slide) through mammalian tissues, doing considerable damage along their path. These bullets are alloyed and lubed properly so they will NOT substantially lead foul any normal barrel. Using modern powders added velocity and remains within the SAAMI pressure limits of 15,000 PSI. The result is a fairly lethal cartridge that brings new usefulness to millions of these old pistols. Depending on how much clothing must be penetrated and how much bone is encountered, expect 17 to 23 inches of straight-line penetration in mammalian tissue with this load. This ammunition is safe to use in any solid frame revolver that is in ordinary shooting condition. “Solid frame” means any revolver that is not a top break frame. “Ordinary shooting condition”, means a revolver that is in condition to fire any modern factory, 32 S&W LONG ammo, without malfunction. Have a competent gunsmith check your revolver for “ordinary shooting condition” if you have doubts, as many of these revolvers are very old and some imports were made of questionable quality as manufacturing techniques and materials were not advanced ten or so decades ago. To add versatility, this ammunition can, of course, be fired in ANY/ALL revolvers chambered in 32 H&R Magnum and 327 Federal.