I was looking into the AMP mil-spec round connectors, just trying to figure out which one to get to have 6 #10, the closest I could find was a 7 pin for #8.
mil-spec round would be perfect for this application, as they're designed specifically for rugged used like this. Military has gone pretty much completely crimp now.
Note that when ordering military connectors, the backshells and pins are ordered separately. I don't believe there are any #10 pins, and #8 are only in a limited # of styles. I believe #8 crimp pins will #10 cable, though I'd have to pull the specs to verify.
Gonna cost you $$$ for mil-spec, though. Uncle's got deep pockets.