Slight problem - Normally Cuprinol clear was used to protect the wood from fungal attack and then treated with raw linseed oil. No problem.
Used alone, you will find that raw linseed oil has some problems, other than the drying time, of course.
# No UV (ultraviolet) light resistance... UV causes more damage to exposed wood than any other factor, destroying wood fibers and setting it up for attack by mildew, fungus, and insects.
# Linseed oil is mildew food... Many vegetable oils are food products for humans... all vegetable oils are food products for mildew! Linseed oil is not completely denatured, so it can encourage rather than discourage mildew growth.
Personally I'm a fan of raw linseed oil, but still need to get the brush out . . .