Sound like something that you could work with for sure...For myself, I like the contrast of the old Bench rest targets, say a 1" white square inside of a 2" black square inside of a 3" white square, etc. I often make my own but the point being that the "contrast" is great to get those crosshairs settled in along with having known demintions outside of the bull's built in to the target.
I have a modest drafting set and can knock out a Master target quickly for either long or short guns to include Scoped or irons. I also have access to a copy machine so my Masters are preserved. Many great target designs are avalible for free on line but OUCH on the printer ink.