Is the inconsistent gunshots intended?

[rotund spade]

Short answer: It's not intended and there is no way to adjust it.

Long answer: The triggering of sounds is subject to the game's framerate in a few ways, which results in these inconsistent fire rates. There's nothing you can really do about it, sadly.

[coarse kite]

Alright, fair enough. Good to know though, I suppose I might be able to mask it somewhat by giving my samples a longer release. Thanks!