This bullet has the correct profile for use with either the 35 WSL or 351 WSL cartridges, when crimped in the top groove. The nominal weight is 171 grs, which is close to the factory jacketed bullets that weight 180 grs. Bullets are cast with Lyman #2 alloy and the Brinnell hardness is around 15. These are sized for these cartridges and should not be used in either 9mm or 38 cartridges since they are a nominal 0.351″ diameter and are specific for these two rifles. The shipping weight is 555 g/50 bullets. The price is for 50 bullets.