I don't think you will be happy trying to ID/engage targets out to 300yds with a predator. It works inside 100-150yds.
300yds is a long way at night. On unfamiliar ground, in poor thermal conditions, 300yds is even further at night.
Here's my go to setup for patrol/stalking style hunting ...
And I would have a bushy LRF in a pouch as well.
IR-Patrol on the left eye. PVS-14 with PAS29 clipped on, on the right eye. Good intermediate distance detection/ID with the patrol, fast short distance (inside 150yds) engagement with the 14/29 ir-laser. Longer distance engagement with the MK3 60mm as well as long distance detection/ID.
Need the range finder on unfamiliar ground. Can use the 14 to see the ir-laser in the LRF and guide the pulses on to the target area.
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In this case, my buddy had my helmet with the patrol and 14 and his bushy LRF. He detected, ID'd this moving yote Other buddy tried to call the yote, it moved away faster. He tried to call it again, it went to ground. First buddy ranged at 205yds, I knew that was 6 inches up for me with 5.56(10.3) with mk3 60mm I held 6 inches above the center of the neck and fired. DRT.
Probability of making that shot with Predator, would have been much lower.
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Now if shooting from setup position ... in open terrain ... here is 5.56(18) on manfrotto tripod, with PVS-30 and ELIR-3 illuminator (on 3 o'clock so not visible)
Range finder on top of the rifle.
Range finders are very useful, especially on unfamiliar ground, especially if trying to shot out as far as 300yds at night.
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Pulsar has announced Trails with LRFs ... they should be out this year. Maybe watch for one of those if you want a single unit to shoot out to 300yds.