Weapon Upgrades and their effects on reputation gained?

[Walker De Plank]

I tried searching the forums for an answer to this question but to no avail.

I am aware that if you sink points into skills that increase damage on any weapon will decrease your reputation gained per swing for said weapon. How do the upgraded weapons effect the reputation gained per swing? Do the better weapons increase overall damage therefore decreasing the reputation gained? Is it more advantageous to upgrade one specific weapon while keeping the initial weapon you received for another one?

This question first arose for me while looking at the double barrel and tri-barrel pistols. I wasn't aware of how they would affect the damage per shot of my pistol but they both looked beneficial with the ability to fire multiple times before having to reload.

Sorry if this is posted else where and thank you for any help.