Hi Shane,
I would urge you not to use 1/16" pins for your barrel pins. It is fine for all the others but 5/64" or better 3/32" pins are my choices. Although you may not remove your barrel very often, but the larger pins make that easier and less prone to damage the wood trying to use a tiny pin punch. The larger pins also are less likely to bend or get mushroomed on the ends from a punch. A good tip is to make the pins slightly short of the length needed to be flush on both sides of the stock. When you tap them in flush on one side, they are recessed on the other. The hole then helps prevent the punch from slipping off the pin when punched from the recessed side. The bigger hole in the lug is also easier to file into an oval shape to accommodate movement. However, the tip portion of a rat tailed needle file will fit in a 1/16" hole.
dave