I have it in mind to build a really fancy sxs, like the kind that cost too dang much from Engy-land. My dad deserves one. But here is my problem - the receiver. Is a boxlock or a sidelock easier to make, or might it all be a matter of opinion? So, for either of the receivers, what steel is used? Is it milled from stock or is it common to forge it with a trip hammer/press/machine stamp/gizmo? And free resources would be much appreciated.