Marc asks about spring feeding in Mass.

Go ahead and feed.  1:1 ratio is fine, either by weight or volume.

Strong hives that might want to swarm are just what you want...but give them
plenty of room so they don't swarm!  You are unlikely to overfeed as the
brood population is what counts (compared to the adult population) and that
is going to be limited by pollen rather than by syrup.  You need adult
populations to collect the pollen, keep the brood warm, etc., and that needs
syrup or honey.

the hatched brood population is what will eventually collect your honey
surplus.

Hope this helps,

Lloyd