got a DD1400 coil for my birthday. used for 3 days not much success.im using a dfx.( need a program for upstate n.y..) my house is a old colonial 1700s.i know there must be cannon balls or at least bullets . can anyone give me what vdi #s i should be looking for.is there any way to know a cannon ball from junk iron.i havnt found any deep targets.ONE MORE NICE DAY SO HAVE TO MAKE THE BEST OF IT.