Nice work Greg - that piece has real nice proportions and shape.
Although you should be proud of your forge work, if it were me I would file out most, if not all of the forge marks, if you want it to look like an original - it would be very rare to see any trace of forge marks left on the iron on a finished rifle - even mountain rifles . File marks yes, forge marks, usually not. You could leave a few inside the triggerguard bow, etc.
Good job!
Guy