Spitballing, but would exploding dice make guns sufficiently more dangerous than other weapons, yet still not instakills every time? (Exploding dice: if you roll the maximum on a damage die, you roll again and add that amount to the damage. If the second roll is also maximum, you keep doing it until you get a non-maximum roll.)
Oh, also, this isn't a setting per se, but it does have a framework for using the 5E ruleset in various period settings:
www.drivethrurpg.com
Oh, also, this isn't a setting per se, but it does have a framework for using the 5E ruleset in various period settings:
DriveThruRPG
