I was wondering how the case capacities of the new 308 Marlin Express, the 30 TC and the 307 Win. compared to the 30-30, 30-06 and 308 win. The old NRA book of handloading lists the 30-30 at 45 grains of water, the 308 around 58 and the 30-06 at 69. These figures were with the case full to the mouth with water.