Directly to the right. Harlan does that to receive th ecomb. Scot does too. The fact is a huge majority of top shooters use this method. they may describe it differently, and execute it with a bit more grace, but the key is to get the "gun at set" right and then you have removed most of any potential error. To be fair to Harlan, his mount is very smooth and the gun at set is just a fluid move.
I learned this originally from my original coach Jack Gracey. Gracey also taught me the slide/press forward into the shot that Harlan does so well.
This system can be taught and learned. My son-in-law, Mark Cameron (mgr Minneapolis Gun Club) does these exact steps including the press/slide into the shot.
Every good shooter I have ever witnessd use this system has his own little variation. You will develop one as well.
Greater proof that this works is the comparison of the Harlan method with that of a hunter gun mount. They have a very tough time getting the gun in the right place every time.
And by yet another comparison, the "gun down" guys (oly skeet et al) hav ethe butt pad/stock jsut slightly below or at their armpit and it onlyhas to go 5 or 6" to be placed properly. Adn too, those shooters do not have time to "chunk" their face down on the comb. The gun comes up to the face.