Re: topic resolved
Your Swarovski on 24 power will certainly enable you to see a face clearly - each eye for that matter at 700. Fact is that your TDS reticle is somewhat self-limiting to 600 yards - it was designed that way as the fellow who came up with the idea feels that 600 is about as far as one should hunt to.
It is a remarkably versatile reticle, will accomodate a wide range of calibers and velocities. I particularly like it for the .308 Win. with 150 grain bullets as the bars are right on in one hundred yard increments out to 500. The TDS is not really a tactical reticle, it is primarily intended for hunting. Tactical long range shooters seem to prefer the Mil-dots to any other reticle design.
Most long range shooters employ turrets and they crank on the necessary elevation and windage adjustments whereas the TDS uses repeatable hold-offs. Your scope will have metric adjustment calibration - about 1/3 inch per click which is not as user-friendly as exactly 1/4" per click.
Your scope is a good one - I happen to have been with the inventor when he first tested it in New Mexico.
Although your .223's can reach out, most LR shooters like the venerable .308 Win as it is capable of reaching out past 1000, is cheap to shoot and it has no secrets - all the math has been done long ago by the military.
Shooting past 500 with a .223 is a definite long range challenge.