You can check with Buffalo Arms for ammo also. They carry all types of obsolete and hard to find ammo.
I own a model 1910 401 WSL, lots of fun to shoot, easy to maintain. Take down is simple, just loosen the screw at the back of the receiver and tap the rifle apart. No further take down is necessary. To lock the action open,
press the plunger down and give it a quarter turn. To close, reverse.