It depends on a few things. Like how deep is it? Has the bullet been fired or is it dropped? Are you in digital or Smartfind? The short answer is that minnieballs will come up very close to where a zinc penny does and musketballs will come in a little lower, both in digital numbers and on the Smartfind...similar to where a square pulltab does. Here are some shots from ones I dug a while back. The minnieball in the second shot would have signaled a little higher than the musketball normally, but as you can see it was fired, has lost a little of it's perfect shape, and isn't 100% intact. As with anything, that will throw off your numbers and display. Like a gold ring that is solid compared to one that is either broken or bent...whole different ballgame. But When you're relic hunting, anything in the range of the stuff below is digging material. Some would say that when you're relic hunting you should dig everything...at least if you're in the woods or a clean field anyway. Cannonballs, rifles, and other items that will often be heavily rusted will not normally be found by those who only dig the "sure things". For buttons you can expect them to come in anywhere from a decent looking coin signal to in the same range as the bullets below. But more likely they will be somewhere equal to or below the numbers that we below. They are widely varied too, as you have flat buttons, two-piece buttons, small, large, in between. Hope that helps...