Move the barrel back like mentioned even if you have inletted the tang. You mentioned chisel point so I assume the tang is probably straight toward the breech or maybe slightly curved. I feel sure you can forge out the width of the tang to make it fit the inlet.
Come to think of it I suspect you can forge the tang out enough to fill the 1/8" gap without moving the barrel back. I usually gain over a 1/2" when I forge out a fantail tang to make a pointed tang. I usually do it hot and on an anvil, but have done it cold. Remember, especially with a pointed tang, you need to have a little gap between the end of the tang and the wood in case the barrel moves rearward in recoil.
*see Jerry beat me to it while I was typing*
Dennis
Dennis; his tang is just like it came from Jason, squared off at the end.
Alvah; Any time you are inletting on a curved surface you must begin at one end and go to the other. A tang is the same, start the hole where the tang meets the barrel and inlet it down and back, note that you will want to have bent it before starting or very soon afterwards. As you move rearward slowly remove wood further toward the tail of the tang, use inletting black to tell you when it is time to remove a little more wood under the tang. Soon enough you will come to the end, at this point be very careful cutting in and lowering the tang to its final position because that position of the end of the tang will be forward of where you think it will be.
You are going to have the same deal when you go to inlet the trigger bar - But first know this: where that bar is positioned, front to back, is
critical to the success of your gun, it must be exactly right in order for the double-set triggers to work properly.
First, just as with anything you intend to inlet, file a draft on each end (and the sides too) at something like three degrees, perhaps a bit less. Mark your centerline on the underside of the stock, center the bar and begin inletting the bar at the end towards the muzzle and inlet it down going toward the butt. Again be careful of where you cut in at butt end of the bar. In the photo below you see the trigger bar inlet but the end toward the butt of the gun not yet cut in.
In this last photo the end is cut in and almost down were it should be.
dave