Quote:
Originally Posted by Ste Hughes
do the maths
40mm = 5026 mm2
35mm = 3848 mm2
25mm = 1963 mm2
half of a 35mm target is 1924
so you could do it

I did and I don't think it works on any
Mind you it's a long time since I was at school
I thought it was the Radius squared not the Diameter for area of a circle
ATB
Ray.