hey guys in a few weeks I,m going 2 b helping clean out a target shooters 22 cal target trap I have,nt seen it yet but I,m being told it has sand in the bottom of it their r prob 10 traps with a few thou pounds in them it,s been over 4 years with many clubs having shooting their any idea how the best way to tackle this and would this lead b close to pure like I said this lead is 100 percent 22 cal thank u ?