I sure can't do a comparison as I don't have my .17 Tac back yet and I've never shot a .17 Predator. I do know the Predator was on my mind before the Tac but availability of dies etc. not to mention I already have the .20 Tac forming equipment led me to the Tac.
Both have more than enough horsepower for me .17 Tac dies are a call and order deal.
The .17-.204 would be a dandy as well but I prefer the selection and quality of .223 brass available. I'm using some IMI brass I been holding out on you guy's
.
In real world performance I can't see much actual performance difference between any of the three. Over-bore is over-bore, how much do ya need
.