I'm currently in post production with a WW2 era short. The climactic scene at the end takes place within a pine forest. There are gunshots that happen offscreen, away from the main characters, and gunshots that happen where the main action is taking place. I'm really struggling to make them sit right in the mix, due to the fairly unique way that trees both block and reflect sound at the same time. It should be mentioned that there wasn't the opportunity to record impulse response on location due to unfortunate time constraints (squeezing a second day of shooting into the last few hours due to predicted weather).
So I guess what I'm asking is this: How would you approach a similar situation in terms of creating the right auditory space within a forest environment?