The price is based on 20 cases. While similar to the 30-30 case the dimensions are different, although it does use the same diameter bullet, 0.308″. The two cases are not interchangeable and the 303 Savage cannot be readily made from any other case. Unlike the 30-30, the 303 Savage bullet weight was nominally 190 grs. Shipping weight is 200 g/20 cases.