Jersey, if the arrows were the right spine for your dad's bow, most likely they will be too stiff for yours--unless you shoot a point/broadhead that is a lot heavier than he shot.

If they are not cracked or otherwise damaged, they should be ok to shoot. Check them out good, flex them some to make sure they are still sound. The Port Orford Cedar trees that arrows are made from are very old to begin with--live trees cannot be cut, so old trees are dug up, salvaged from bogs, etc.

The kind and weight broadhead you use is up to you. I like to go with 125 grains or more. Any quality broadhead should do the trick, but I strongly suggest staying away from mechanicals.

Good luck!

Chad

Long Bows Rule!