The Krag stock is very vulnerable to breaking and splitting in certain areas.

The small area of wood between the magazine and bolt handle recess is especially prone to breaking along the grain. (That is why I recommend reinforcing a glue repair with a pin).

I would use Brownell's Acrglas, both to glue the wood and bind the pin.

I like to protect gun metal (exposed and hidden) with a thin coat of RIG (Rust Inhibiting Grease).