Can’t achieve infrared look. Help!

So I have a fujifilm X-T2 and ive paired it with both a hoya R72 as well as another filter that is 850nm. When I attempt to get the typical IR photos that you see with black skies and white foliage, everything just sort of looks monochromic gray. I’m shooting in raw and converting to b&w and no matter how I edit it, still can’t get it there. I’m getting frustrated with it. I may just bite the bullet and get a converted camera. Am I doing something blatantly wrong? Examples of other people using the exact same filter and camera are much more dramatic and have that “infrared” look, but I can’t get it. I have fairly monochromatic looking, almost “typical” black and white, not the super dramatic look I’m after. Thanks!