I've been looking for information on loading smokeless power with fibre wads and it seems few and far between. I'm wondering if I could use fibre wads instead of plastic wads for any reload recipe. Given pressure from a fibre wad is less than plastic, all things otherwise equal, if I choose a recipe with plastic that was within the pressure range I am looking for would I be safe to say if I exchanged it for fibre the pressure would be somewhat less and still safe to shoot?

Nothing is foolproof to a sufficiently talented fool.