Remembering and honoring your dad by hunting his gift is a commendable thing to do. Being a Marlin 1895 he must have intended you to hunt with it. It being a Marlin 1895 design consider a scope with a 20mm objective. It would have some period correct relationship and work well for Marlin 1895 distances. Just my opinion.

BE STRONG IN THE LORD, AND IN HIS MIGHTY POWER. ~ Ephesians 6:10

Socialism is a philosophy of failure,
the creed of ignorance,
and the gospel of envy,
its inherent virtue is the equal sharing of misery.
--Winston Churchill