Nitro,
Much depends on the type of hunting you are intending to do with that rifle and what sort of light conditions are present.
A large white bead works well in dim light but personally I don't like white beads in real strong sunlight.

For general all round hunting I prefer a silver bead forsight and a vertical rearsight with no slope angle.

Because your foresight bead is missing you have an opportunity to try different types and see what suits YOU best.
If you need any beads made I can do these in silver/gold or boar ivory but would need to know what size is needed to fit your gun.