Can anybody give an approximate idea of how to estimate the size of bomb dropped by the size/depth of the crater produced? I understand this will vary depending on ground conditions,height of drop etc,but just a rough idea so i can gauge some biggish ones on some publicly accessable ex WW2 range sites in Dorset. Alternatively I can get site pics with scale next week if that would help?? Serious replies please,not supposition! Thanks in advance, Tig.(Ashley Walk Bombing range,Arne peninsular decoy site, Studland Heath training area,Ballard down Range,Crichel down bombing Range,Chesil beach bombing range.)