I like those targets, good for some casual fun,
For the more 'formal' stuff; I have drafted official ISSF spec targets for Rifle and Pistol comp (or practice or plinking)
50m 0.22cal rimfire rifle, A4/A3 print <-this is great for most rimfire and centrefire accuracy shooting;
25m Rapid pistol;
25 or 50m precision pistol;
300m Centrefire;
MOA - A4 print - minute of angle for sighting & zeroing etc, scales as required;
MOA - A3 print;
All are printed at 1:1, no zoom if you want correct sizing, 300m target needs a plotter or pro printing as it requires a 1300 or 1020mm square sheet/card....
I'm happy to email the hi-res pdf targets to anyone who want them for non-commercial use, just pm your email.