Need some advice with a challenge

Hi,

I am doing the whiteout one and I am I think 6 or 7 days away from the blizzard hitting. I have everything ready except for one thing. Turns out I am now 2 bullets short thanks to my drunken stupidity for going hunting one last time last night. Is there a spot(s) that has a high rate to spawn bullets? I have cleared coastal highway, mystrey lake, and pleasant valley major stops. I am still pretty new so i don't know any of the other zones that well. I can't believe I did this I am so disappointed right now I really hope someone has a positive answer for me.

Please help.

I didn't find the right solution from the Internet.

References:
steamcommunity.com/app/305620/discussions/0/2650805212045688057/
Business Overview Examples

Thanks