I am a reloading novice. I reload for my .270s and my 7mm-08 but don't experiment much and am a novice on cartridge history as well. My question started because of the old 6mm vs .243 debate and has evolved into comparing the old mauser case to the 08 case. My question is which of these two has an advantage over the other if any? It appears the mauser has similar capacities but a longer neck which should mean it would be a reloaders dream right? I know that factory ammo for the mausers have to be at a lower pressure because of older gun designs, but if loaded to similar pressures, is it able to achieve higher velocities? Also, to take advantage of the mausers long neck do you have to rework the action or box because its a little longer shell? Curious what you guys would have to say.