Personally, I'd stuff 225 Partitions, and perhaps Accubonds.

I have nothing bad to say about 210s, just myself, will take the extra FPE at long range and click one or two more, as only 1-2" drop diff at 400 yds...

That said, I respect anything JB has to say and wondered what he meant by 'Quirky' results w/light mono's - thinking he means weird inconsistent results, but perhaps he meant extraordinary...

I see little reason to go real light for cal even in mono when using a round w/lots of capacity. Lower BC will negate the MV diff IMHO, at longer ranges.