In my experience the 219 Zipper will handily outperform either of the others in velocity and often in accuracy as well. Many factory Hornet chambers appear to have oversize necks, and perhaps this is the reason I've never gotten the best accuracy from a std Hornet. I have a low wall with Shilen Hornet 1:14" bbl that's now been set back and rechambered to K-Hornet, and as a result it went from 1.6 MOA down to 1 MOA. I have a Ruger No 3 Hornet bbl that was so inaccurrate that the owner gave it away, but it now is installed on a Martini Cadet and chambered to 219 Zipper, and shoots less than 1 MOA.
Zipper dies are sometimes pricey and velocites are limited to just above 223 Rem levels by the case taper, see Frank de Haas' article comparing the various cartidges in the Zipper family. I have confirmed this with my own Zipper, it ain't no 22-250 but will handily smack 'em at up to 350 yds with the right bullet. Neither the Hornet nor the Bee are anywhere near this class, but OTOH either of the smaller cartridges would be more suitable for smaller game in settled areas at shorter ranges.
I personally like the Zipper quite well and have several both std & Improved as well as several Hornets/K-Hornets. I can easily achieve a tight-neck condition by using 30-30 brass and turning the necks just slightly, and this appears to improve accuracy noticably with the Zipper.
I've had several Improved Bees that were tackdrivers but have no opinion on a standard Bee.
Regards, Joe
