I just shoot these matches with a 25m/yd zero. If you do the research on iSnipe or any of you ballistic apps (Android?) you will realize that often (or very close to often) that your 25m zero is /can/may/likely/ very possibly be your 300 m zero (give or take). And that's what's cool about this kind of sighting in and competing at CQB ranges.
I am up to 18 shooters now and I have to cap things at 20 shooters (including point man for CDTSA Milo; Buckaroo) for the 8-9 Sep clinic. Now if you can make 6-7 Sep CQB Clinic, I have lots and lots of room there!
So room for 2 more shooters (8-9 Sep 2016) !!!
And then I have to start a "standby list"
Cheers and warmest regards....
Barney