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1 ) I donot shoot fclass , have shoot a couple of FTR matches
2 ) I can see no reason why you cannot use a FFP reticle , as long as its thin at the optimim power , ie towards the top end (40x ),...

I think , yes , most in NZ donot use anything other than a crosshair/dot etc , BUT some of thats because thats all that was available to them in scopes they liked .
Thats changing , if you look at...

You may want to look at the new Burris XTRII line , in particular the 8-40x50mm fclass , has a neat reticle , FFP, for f class , has a 10moa per turn knob , and 1/8 moa clicks , price is 1200 usd