newbie from western pa.

[camo56]

Hi all, I am brand new into metal detecting, bought my first md 2 weeks ago
an have a few questions, first off I bought the BH discover legacy 3300. I have taken it out quite a few times recently an found a few coins, an old police badge an a whole lot of scrap lol. One problem I have with this detector is the screen on it registers a whole of lot of 199 which is the highest reading on the machine, but there is so many of these in the area that I hunt if you dug everyone there would be no grass left. I have turned the sensitivity down it dont seem to help much, I also have played with the ground balance to, same result. Like I said earlier I am brand new into this hobby but I have no experience at all. Any help or hints would be sincerely appreciated. thanks guys an gals