Actually here's the rub. You can't reload a crossbow, even a one handed crossbow without a free hand. This is something that was clarified a few months ago. So if you have the traditional melee weapon in one hand and the hand crossbow in the other, you can't reload. You have to sheathe or drop the melee weapon to free your hand and then you can reload. However, reloading is part of the attack that you make meaning that there's no action requirement on your part. So don't worry about that, just make sure you have a free hand. If you're using crossbows, that feat is imo a mandatory requirement at some point. Either because you have multiple attacks per attack action, or need something to do with your bonus action or both.
I'm brand new to D&D so I just want to make sure I understand.
In this you say, "make sure you have a free hand." so would I be able to use my action to attack with a one handed weapon (short sword or rapier) then my bonus action (as part of the feat) to attack with a hand crossbow. I could then do that each turn without taking any kind of action or bonus action to reload the hand crossbow?