I've read a lot about these two and how they're roughly comparable, what I am wanting to know is which one shoots a flatter trajectory? I always see people saying the 30-30 at 200yds is marginal at best, but how about the 7.62x39? A round that is only good to 200yds (while probably more than enough for assault rifle purposes) doesn't sound like something many militaries would approve and field. Please, oh forum gurus, satisfy my curiosity!