Don’t let these guys scare you. If you have ever hand tapped a hole and know the feeling of it is straight or it is NOT. If not stop correct, once that cutter commits to the metel it’s too late. Be patient and start it right.
Sorry chief. Not trying to scare anyone.
Apples to oranges with the tap analogy. You can start a push broach absolutley square or even the tilted the other way and sometimes it will dig in. Sometimes it will really dig in. If you have a high limit dimension it's not uncommon to be good on the top and over on the bottom.
I've push broached too many holes to recall. Not talking about repair work, but production. Couldn't use one pass production keyway broaches because of odd bore sizes, or stock allowance in bores. When you've got a production lot to broach, using alignment tools, all proper methods, and the broach still sucks, stone a small land and you'll breeze through the rest of those parts.
It's not even scary.