I remember a conversation with you here on THR when you calculated the recoil impulse of 7.62x25 to be roughly the same as .38 Super.
It's not just the recoil impulse that determines it. It's more about the momentum, and the momentum generated by an 85-grain bullet is iffy.
Just going by the photos, the Tokarev's slide looks to be dimensionally close to the High Power's.
A guy over on 1911.org has been tinkering with a Commander-length 1911 chambered for .380 Auto. Even loaded to proof-level pressures, he can barely get the slide to move...and even with no recoil spring in the gun, it won't make it more than about 3/4ths of the way.
It may be doable with a 90 or 100-grain bullet loaded to 1500 fps, but that pesky question that keeps me from wasting time and money just keeps popping up.
"What is it for?"
If the object of the exercise is simply to see if it can be done, then by all means...carry on, and keep us posted. It'll be interesting.
You might be able to get a few pointers from Wild Bill Caldwell over on Pistolsmith.com. He's been tinkering with light, small caliber, warp speed cartridges in the 1911 for several years, and his efforts have been frustrating. He's blown a few magazines out the magwell, and the last I heard, he'd pretty much given up on the idea.