I used to use Ian Pellant's version, and I found it very useful. But, it seems to be hiding on my computer right now if it's here at all.
Did Steve in NC maybe post a link to something right here on the forum somewhere? Maybe?
Safe and Happy Shooting!
Ed Krzynowek, The Airgun Tune-Meister
"We can rebuild the squirrel. Make him stronger, faster...We have the technology"---Skyler M.