Wow!
Thanks for all the really inspired responses everyone. I'm not sure it makes any difference, but the round in question for me was a 22-250 Winchester whitebox JHP round (jacketed hollow point) which I had shot a few rounds of at the range.
There was no real ethical issue for me, because I wouldn't really consider using these bullets in a hunting application. I would much prefer a round specifically designed for the game I would be hunting, in this case, yotes, foxes and similar.
As a point of interest, I didn't even see the term about 'non-expanding' ammunition at all, in fact (and I might just be blind) but all I saw regarding the ammo (other than caliber restrictions) was that a shotgun must be plugged for three cartridges and the 5 shot center fire thing.
In any event, stirred up a lively discussion
Thanks again for all the feedback