Not that I can find now. Just the odd posting on other forums from a few years back when I was searching the web for .500S&W reloading recipes.
But the local guy that avised me learned it from back when he did a lot of H110 in .44Mag that someone had tried to go with less than the fairly generous minimum load. It caused VERY inconsistent burns to where some didn't ignite at all and some others went off with one heckuva bang. As in far stronger than the amount of powder would suggest. He took this as a warning that we should not dicker around with the narrow range of min to max for H110. He also mentioned running into his own issues if there was much of an airgap even with the proper load. He was quite strong on this advice suggesting that it may be worth a gun and maybe some possible bleeding to not heed it. This from a guy that had been reloading with H110 for a good 30 years at that point. A fellow that REALLY likes his Magnum loads in all sizes and thinks that .454 Casull is "just right when stoked up". How he hasn't popped his fillings loose or detached a retina I have no idea.....
As a result I've always tried to stay with no more than about 10 to 12% of the volume of powder for any residual air space over top of an H110 load. So, for a simple example, if the powder fills the casing for, say, a depth of 1 inch and the bullet when seated leaves more than 1/8" air gap from the powder to the bullet base I would not want to risk it. This method served me well with my 500S&W loading and with a few batches now of .44Mag. The recoil has always been very consistent so I'm not about to play with anything more than that given the power in a case full of H110.
And while pictures can be deceiving your pictures seem to suggest that you're well over that amount of air gap. If this is just a perspective issue and the air gap is minor then carry on.