http://earth.google.com/download-earth.html .once downloaded, go and type in the adress of the place you shoot at or shoot by.If it is just a vacant lot or somthing,type in the adress of somplace by it ,and zoom around until you find it .
once you've found it ,and zoomed in, go to "tools" at the top of the screen,and click measure.then click units and select yards,feet,meters,ect.,whatever you use.
then click the spot you shot it from,and by using landmarks like trees or rocks, find where the shot landed.then click there.
The box that says "measure" that you selected feet or meters in,you should see the distance between the two points,or the shot distance.
the first time you do it ,with the downloading and such,it takes a while.but after that,just rememeber the place you shot to and the place you shot from,and it is reeeaaally easy
P.S-sorry if the explination above is a bit confusing.writing is not my strongpoint
here is where I shoot my cannon.If I angle the cannon to shoot towards the bottom right corner,there is 0.64 of a mile,free of houses.If for some reason I put the cannon all the way up to 150 psi
( the highest I ever need to shoot it is 80.at that pressure,It goes through a carhood,2x4,3/4 inch plywood,and went 300 yards through the air before hitting the ground. soooo,I wont put it up that high for safty )
I will have room to shoot it .Anyway ,here is where I shoot it,the point where the line starts, nearest to the measurement box,is my barn.this is the field/fields next to my house
NOTE:to veiw image to where you can see it ,copy it then open it in word or paint where you can zoom in or enlarge it to see it better
