[QUOTE][Where do you go to look for them? Mostly rivers/creeks/lakes?
Here in Wyoming I have found them in all the above, except neat lakes. I have about 2 dozen, most found while hunting, and a few when I simply, out of bordum, went for afternoon walks. I look for abush points for game, near water, and have found several there. And many just right out in the open flats. I try to use the analogy, how many spent shell caseings have you found? And with those your looking at a mere 150 years of people using cased rifle rounds to hunt or shoot, I have found a few old, like 45-70's and 45-100's, . But if Native Americans have been hunting for 10,000 years like some claim, and they also missed, had battles, or the arrows fell out of wounded game, you can get an idea of how many might be around. At water holes, springs, i have found a few broken heads, and handfulls of chips, I think they were watering ponies and passed the time making arrow heads. just a theory of mine. I have found teepee rings, which were old camp sites and found scrapers and chips there.