All right all you 16 sleuths out there!

I'm 72 years old and have been killing deer for 65 years.
I've killed deer with a rifle, muzzle loader and one with a bow.
I'd say I've averaged one+ a year, figuring in the few years I wasn't able to hunt and then the years I filled multiple tags.

In all my days, I have NEVER killed a deer with a slug! 🤯
I'm hoping to change that this year.
1) semi auto
2) 16 gauge
3) slug
4) no scope

What can I reasonably expect to be the effective range?
50 yards?
60 yards?

I've got two slug choices.
4/5 oz
OR
7/8 oz

I realize that with a scope increasing accuracy, it will probably kill out to 100 yards.....but I don't have that luxury.

Thanks for your input.