yeh iv seen my dad do that in his younger days, wouldnt say exact 18 minutes but damm close,... some people just have eyes like hawks, with hand to eye co-ordination to match
ok so it wasnt perfectly trued, but hella close, i could never tell and niether could anyone else, they were as true as they could of been
mate some people will be beter than you at some things through life so dont have a heart attack over it