I'd make sure the holes are lined with something to buffer the concrete. I've been in buildings where PVC pipe was fitted into the holes and stuck out about 2-3 inches on both sides. I know this cuts down on overall diameter, but it saves on cables getting "sawed" when rubbing against the concrete.
Side note, for those long runs, get a hand held crossbow with blunt tips. It's fun and fast!
**OOPS! Sorry, didn't read the full post and just caught that you can't use PVC. Hmmm, That is an odd one. The only thing I can think of, and I don't know the code to this, is a pour-able epoxy that would line the hole. Pour it and let it harden and you have your sleeve.
