OzFclass

Apart form the occasional fluke what cals are making it happen or even just very high x??

Down south it think there is only one guy that i know that shoots a 6mmbr and only a few that have a 6mm as a back up. Down here i get the feeling that we sometimes sacrifice inherently accurate cartridges for a bit more BC.

280AI has done it (Matt P's)
Fairly sure the 284 would have 6BR and 6.5x47L probably too.
I would have with my 260IMP if my first score shot wasnt a low 5 the other week from winding the wrong way after sighters.
A 308 and 223 has done it over here in FS too.

Look at the thread with F class records.

Down here i get the feeling that we sometimes sacrifice inherently accurate cartridges for a bit more BC.

I agree wholeheartedly! The only issue is, even though I consistently shoot high center counts (6+), the best I seem to get to is 60.9 and that was even when I cut 6's for sighters

I'm a great fan of the 6mm (Dasher or BRX) which has given me great center counts!!! Although I don't enjoy cleaning them.

I've given up chasing Super V's, and spend more time just keeping the group centered. I think a 180 is a better outcome than a few lucky 60.10's IMHO.

That might all change the day I shoot one

Trying to shoot 60.10's would be a club based thing for sure. If the conditions are there for it in competition and you are hammering the X ring as it is of course you would go for it, but at the end of the event a 60.0 is better than a 59.9 unless a couple of shooters end up on the same points.