Firstly, they are elegant rifles and good shooters.
Brownell's sells a high square post front sight which is better for shorter ranges, and a bit easier for elderly eyes to see.
I love the roller coaster rear sight, also. Keep your eyes open at the gun shows for a spare. You can open up the rear sight notch so it is square and could get a better sight picture.
Brass is easily made from .30/'06, but the necks may have to be thinned, although I've never had to.
Correct me if I'm wrong , but the 1909 Peruvian is the only Mauser to have the pear shaped bolt handle, and it's on an intermediate action. The firing pin protrudes out from the bolt shroud just a little bit further than on other Mausers.