Yeah, I would say the 50-200 is a good lens
I use it quite a lot.
In this case I specifically used it - my macro set up would never have kept up with a flying bee (extension tubes, full manual everything) - focusing distance is way too close, manual focus for me is typically only good on subjects that don't move much
plus, I don't like getting real close to bees....
Yes, 1/180th was used because I had my 540 flash firing. It was dusk and the lighting wasn't great - with the 50-200 at 200, I would not have gotten a hand-holdable shutter without some external lighting...
Thanks for all the comments!