If your planned scenario requires the players to react in a certain way or it won't work, you need to rethink the scenario.
Also, watch Unforgiven. Remember that in D&D terms, your PCs are generally going to be William Munny, not random civilians.
Also, also, real world people survive gunshot wounds all the time. In a world with magical healing, projectile weapons are a lot less scary. If your party has a good cleric, it actually makes sense for them to stomach an opening volley before pounding the NPCs into paste. Watch one of the many movies featuring Wolverine. It's gonna hurt to take a few shots, but they know who's likely to need a bandaid and who's going to be holding their own entrails.
Also, watch Unforgiven. Remember that in D&D terms, your PCs are generally going to be William Munny, not random civilians.
Also, also, real world people survive gunshot wounds all the time. In a world with magical healing, projectile weapons are a lot less scary. If your party has a good cleric, it actually makes sense for them to stomach an opening volley before pounding the NPCs into paste. Watch one of the many movies featuring Wolverine. It's gonna hurt to take a few shots, but they know who's likely to need a bandaid and who's going to be holding their own entrails.