Ok just made these up in Quick Design, based on the reamer prints I have and my meager quick load/ quick design skills.
.17x.204 Long neck case capacity is 32.4 grains
.17x.223 Improved case capacity is 32.1 grains
.17 Predator case capacity is 32.5 grains
.17 Tactical case capacity is about 28.6 grains. (This is approximate as I only had a reamer print for the 20 tactical)
So my question is will the .17 Tactical run 4,000 FPS with 30 grain Bergers?
ML