In August 2011 I made myself a Hydrophone RPM table for GWX but never got to use it. Now finally I picked up SH3 again to find out that it works spotless. I use it as a kind of second opinion though, still using the nomograph primarily. But after 5 kills, both methods still compare 100%.
If want to try it I put it up for download here:
http://opspin.net/operationspinnenne... with GWX3.pdf
it's so cool to count those rpm's, makes you feel really hardcore...
