You can`t use neither auto-corssbow nor the bow. But I dunno maybe I`m just bad at this.
Are you talking about FC4. The bow (I dont have the crossbow yet) is very, very powerful. In certain situations they win even against the silenced Z93, because if you kill someone with the Z93, his mates will know which direction the shot came from. Not so with the bow. I have footage of taking one of Harmon's fortresses, with bow only, but it's not uploaded yet.
My main issue with the game tbh, is that I don't like the protagonist. I don't really like any of the characters, except for those returning from the previous installment, and Sabal (but he's starting to piss me off recently as well). The rest are psychos, blowhards, or sexually ambigious weirdos. Or all of the above. But Ajay stands out, because my enjoyment of the game depends on him the most, and he's such a wet noodle, it's just sad. There's no sense of personhood to him at all, which is fine as long as I'm out there blowing shit up, or climbing, or doing murder, but as soon as he opens his mouth to talk to someone... jesus christ what a nonentity.
I lked FC3 so much in no small part because I liked Jason so much. Now, though personally I think he was brilliant and one of the main strengths of the game, he was not everyone's cup of tea, and I totally understand if they want to address criticism levied on him. Fair enough. But stripping the next games' protagonist of anything even approaching personality is not "addressing".
Oh, and here's my video of liberating an outpost while riding an elephant. Cuz elephants are awesome.