In this featurette they talk about how all the gunshots you hear in the shootout in heat, were recording live during production cause it sounded a lot better than post production audio gunshots. So they just use live recordings on set. It's 4 minutes into the video exactly:
http://www.youtube.com/watch?v=gW0yebyGk-8
But how were they able to get the mic close enough to record the gunshots? As you can see in a lot of the shots, with all the action going on, the sound guys would not be able to get close enough to the guns with their mics, to record it. Unless they recorded it from far away, but then the mic would be too far, wouldn't it?
http://www.youtube.com/watch?v=gW0yebyGk-8
But how were they able to get the mic close enough to record the gunshots? As you can see in a lot of the shots, with all the action going on, the sound guys would not be able to get close enough to the guns with their mics, to record it. Unless they recorded it from far away, but then the mic would be too far, wouldn't it?