Is it just me, or is finding bead sizes and hook sizes and shapes that are compatible a little harder than you would think?

There seem to be subtle differences in the hook shapes that make getting a proper fit with a bead pretty fussy. My Dai Riki 060 nymph hooks seem to have a kind of sharp turn behind the barb that won't let what looks to me the right size bead pass around it. A Mustad 9761 (the next size bigger!)on the other hand will let the same bead pass easily.

Or maybe it's the way the beads are drilled out.

Is this just a trial and error thing or are there some guidelines that would help?

Any suggestions will be greatly appreciated.
Thanks,
Glenn