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Polygon
The trick is to drill your hole at a slight slope downwards towards the outside. It will soften the angle of the cable and also prevent any water coming in that runs down the wall.
I'd never drill inwards at height, I know some people prefer it but its not for me. I'm ever drilling a rendered house it's ALWAYS a new drill bit. I've not blown one yet and do multiple a week.
I also always use a 2 drill bit method. One 12x450 with black electrical tape around the bottom to identify it and then another band of tape on the drill bit to identify 2/3rds of the depth I am drilling (measure at a window).
The black drill bit does all the hammer action to the tape mark. Then swap to the new bit that NEVER sees hammer ever. This will get the best results and is used on all house types, the only thing that might ever change for me is the size of the 2 drills bits (longer). I used to pilot it with an 8mm and open up with the 12 but the results weren't any better.