I have an older Iver Johnson 410 shotgun from i believe the 1930's what kind of ammo can i shoot in it. I bought some shells that are for HS rated hulls can i use them or are they to powerful?

We would urge you to have a gunsmith check your shotgun, and advise you on the correct ammunition. .410 shot shells have been made in a variety of lengths- 2, 2.5, and 3 inch are the most common sizes- but simply because a shell will chamber does NOT mean that it is safe to fire.