It's all about ease of manufacturing. You can make secant ogives on a lathe using solid copper that you'd never be able to duplicate with standard bullet swaging dies. Also, to change bullets, it's a simple as changing the program for the CNC lathe as opposed to buying $5-$10K in new swaging dies. But, as in anything, nothing comes for free. You end up with long-for-caliber bullets because the monolithics are less dense which translates into increased barrel friction, skin drag and stability issues. It's harder to stabilize a long bullet than it is a shorter bullet. On paper they end up with astronomical BCs, but in reality, no so much. They look cool though.
BC, will check, it is on the boxes
only pic is from the PO when I bought it
Nothing fancy, Single shot Mcmillan action/stock, barrel is big friggin Lilja (picture is deceptive, it is nearly as long as I am tall 5'11"), smith escapes me... NF scope on it now, not sure what he had on it in pic