Re: I repect the fact that this may be a stupid question
If you have a buddy or someone who does design work in your area using Auto Cad just have them design whatever you want, any size you want. Have them plot the design to a Adobe PDF and burn it to a DVD. With that in hand you can go to any print shop and get copies. I plot all my own targets on a standard 24"X36" sheet. Works great.
You can also set a sheet up to check the accuracy of the elevation and windage turret @ 100 yards.
There is something about the outside of a horse that is good for the inside of a man. Sir Winston Churchill.
Everything that is really great and inspiring is created by the individual who can labor in freedom. Einstein