redneckbeamer is correct, that the under $10k MSRP commercial clipons do not compare to the over $10k MSRP military clipons.
After starting with an Armasight thermal clipon ... I quickly realized its limitations and switched to dedicated thermal scopes for hunting. And I recommend that approach for the vast majority of night hunters. Put that magnification on the front of your scope to gain better image for the dollars instead of onthe backend where every 2x of magnification costs your 75% of your pixels.
So for $6k you are below the trijicon line and above the pulsar line for dedicated scopes. So you can go for a trail 50mm 384 and get 3.1x on the front or add more budget and go for a trijicon.
The trijicons have hunting reticles, not ballistic reticles, so the critter is the reticle with the trijicons. So like with my 5.56(10.3) with 62gr TSX for hogs, I hold up 6 inches at 200 and 12 inches at 250 and 20 inches at 300 and that is about it. With a different cartridge you can probably get out to 400yds.
The pulsars have some ballistic reticles, so more support for holding using a reticle in the scope.
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If you really want a clipon, the best one under $10k (MSRP) is the SNIPE, but you will have to adjust it (it has adjustments) for boresight. Apparently Trijicon /IRD do not have a collimating table
The SNIPE says 4x is supported, but because of the good OASYS core image you can squeeze up to 6x for sure and I squeezed 8x myself, though it was getting fuzzy at that point.
If you want to shoot 400yds or over with a thermal clipon ... that will require some big bucks ... and you probably need to wait on th LWTS-LR ... those might be in the $15,000 to $20,000 price range.