I think I already know the answer to this question. Maybe someone else has a better way I didn't consider.
I just installed my vintage K4 on my M99-R. It occurred to me that there are two ways to sight it in.
One is to remove the buttstock, various internal parts and the bolt and hope to get a clear look down the barrel to boresight.
Or, load up a box of ammo and shoot it onto the paper. I am probably going to do the latter. Anything else I didn't consider?
Thanks
ZM
FWIW. The M99 in question has the rollmark on the side and a factory D&T. Bubba has never been anywhere near Grandads old 99 and he never will.