Sierra Sports Master line of bullets provide the same unsurpassed quality as Sierra sporting ammo. These 125 grain JHP handgun bullets are commonly used for hunting due to their amazing cooling power. The .357 125 grain jacketed hollow point Sierra bullet expands on impact for an even larger energy release with impressive weight retention and deep penetration. The Sports Master line of handgun bullets are constructed to be a fraction of the cost of the corresponding .38 caliber bullets. For shooters that don't mind a bit of a larger overall diameter, the .38 caliber bullets are a bit pricey but Sierra's in-house tooling and design capabilities really help to pump up velocity.