Useful links

[dirty harry]

exellent info here, especially pellet weight chart to help with chronny setting so as to keep you on the right side of the law, good stuff.

[18 Wheeler]

Here's a useful site to produce printable, custom maps.

FarmFile, you'll need to sign up but it's free to use and has more detail than the area calulator in mappingtools. There's a 60 second video demo.