theres not one that i know of Drew , George and i have tha same problem when we compare targets . its pretty useless to tell him hey i got a +58 vdi target here so i'll just say it sounds like an Indian head to me or this one sounds like a small button or heres what i think is a shotgun shell. we compare them to the things we've both know will sound like on each of our machines . comparing targets will help out with a learning curve on a new machine your learning and also see how different technologies handle the same conditions .
Dan