Yes, I've tried it in the field, as well as done the simple theoretical ballistic comparisons at home. I compared the difference in TBR's between something real flat like my 7mm SF shooting the .345 G7 BC Berger 180gn Hybrids at 3415 fps, verses a 308 shooting the 155gn Berger. For the majority of hunting situations out to 800 yards and 30 degrees, the TBR's are within + or - an inch of the Swaro's calc. Using an absolute extreme of 1000 yards and 30 degrees, which is a very rare shot to find anywhere, they were within + or - 2 inches of the Swaros TBR. Now For all the extreme long range hunting we've done in our steepest mountains on our most extreme alpine game animal that lives higher than any other game animal we've got, the Himalayan Tahr, we've only once had a shot at this angle at this sort of range. The further the range, the flatter the angle will generally be even in the steepest country.
We had the Swaro's out hunting this week and I was comparing its TBR's with calcs done with "Shooter" on my Garmin phone for my 7mm FatMax at all sorts of ranges and angles, and it was within a yard or 2 all the time.
I'd have to say I was very skeptical when Richard told me Swaro had done the calcs and discovered that the TBR differed little between calibers, but when I did them myself, I was made a believer!
It now means we no longer need have to have such comprehensive drop charts including angles. We can just have simple level come ups in the average atmospheric conditions we're likely to encounter, and that will be close enough out to 900 yards or so, except if extreme conditions. For 1000 yards and beyond I'd always use "Shooter" with full atmospheric, powder temp and Coriolis inputs anyway, and just use the Swaro's angle input instead of the TBR.
Yes, I've done extensive testing on the Fusions, and while a good combo for the money, their beam divergence lets them down at the long stuff. It can be hard to figure out just what you're getting readings off along a flat plain. They will easily range 1800 yards to reasonably reflective vegetation like glossy leaved broadleaf trees and flax bushes, but bright light and non reflective trees like your conifers (pine, spruce etc) will pull you back to 1300 to 1400 yards.
And I'd have to say their optics were disappointing, considering how good their Elite binos are. But value for money, pretty hard to beat if you're on a really tight budget.
I must get round to putting up all my reviews on our website. One day soon, but I'm always away hunting!!!