I have two 1909 Carbines (1909 & 1911) the 1909 has the cross bolt in the wrist and the 1911 doesn't, so IMO - yes it's supposed to be there !
I believe a 155 grn FMJ @ approx 2600 fps or a 174 grn FMJ @ approx: 2300 fps, was the order of the day ! Awesome find, too bad about the
holes though, Still a nice rifle and should prove to be very accurate. I found some Prvi Partzan ammo @ Cabelas for $18.00 bucks a box (180 grn)
shoots pretty fair and provides reloadable brass. Good Luck ! and keep us posted !