And a lot of hand work I assume?My son has one. They can be fickle to set up correctly, especially if the spindles and rods aren't perfect.
The best way to do it. Chuck the drill/forstner bit, and feed the wood into the bit. No drift, and direct center after changing bits. Works better than forcing the bit into the wood with a drill press.I've seen some videos of guys using a lathe to cut the bolt hole. Seems like a pretty good way to do it.
For rifle stocks the action and the trigger guard/magazine cuts where the stock has to be rotated 180⁰ great care must be taken to make sure the alignment is right. A little bit of misalignment on the long axis is a near disaster and any misalignment in the rotation is worse.The problem I see with the pantograph method is that the stock is made in reverse. By that, I mean that the blank is shaped before it is inletted. I was taught that the inletting (heading up) should be completed first, before the outside shaping is begun. The reason is that a shaped stock that hasn't been inletted leaves no room for error. If the receiver is misaligned just 0.05" after inletting, that could throw the butt end off as much as 1". With extra wood to work with, that can be tolerated since the typical blank is 2.5-3" thick whereas the finished stock is about 1.5" at the butt. It's not fun to mount the receiver and barrels into the stock and then draw the center-line onto the comb and find that it's off. Don't ask me how I know.