My thoughts:
It's a long way from a good idea to use a single 5-shot group as the best way to determine accuracy.
It's worse to crimp case mouths into jacketed rifle bullets.
The following comment in the ad:
Since there was no way to quantify crimping force, reloaders simply concerned themselves with perfecting other reloading precedures.
... shows the inventor's ignorance of the ammo industry method of measuring how much force is needed to pull a bullet out of a case; a critical part of military small arms ammo specs. How much grip case neck have on bullets is best determined by measuring that force; its easy. To say nothing of the fact that any crimp on/in jacketed bullets adds another variable to the release force total amount which also includes the amount of interference fit of bullet in the case mouth and the friction between them. And it unbalances bullets.
Few, if any, jacketed rifle bullets smaller than 38 caliber need crimped case mouths into them. And then only the very heavy ones producing 35 or more foot-pounds of recoil. Or, if they'll be shot in a full-auto machine gun.
If you use that tool on one press, you'll need to recalibrate the torque needed for a given die, case and bullet lots if the new press has a different mechanical advantage with its different link lengths.