The expansion floor for Gold Dot that is often bandied about is 1600 FPS (generally the 55 gr. and 62/64 gr., not so much chatter on the 75 gr.); not sure how true that actually is, though. I have been told that when ICE specced out their duty ammo (which was selected to be 64 gr. Gold Dot, IIRC), they required expansion at least below 1800 FPS.
Hornady TAP SBR has been stated to have an expansion velocity of 1500-1600 FPS (according to Kathy McHale, LE sales rep at Hornady circa 2016-MAR).