I just finally got a predator light, a 350 lumen red LED that boasts a range of 250 yards. My longest shot here is about 100 yards or so.
The light has a center dense spot with a halo like flood and it's not adjustable which is fine. Typically, it seems that adjustable lights have a dark spot in the center while on flood and no peripheral while on spot. This has no dark areas or gaps and does both at the same time.
I was able to use it last night and I'll include a couple photos in a moment. The light came with a mount that attaches to a scope, but I'm using a light clamp that works with a picatinny mount so I can switch easily from my shotgun to rifle and back. I still have the picatinny mount on my rifle that came with the bipod so I used that last night. It isn't ideal because of the location on the forend. The forend tapers somewhat from the action forward as most stocks do so the spot part of the beam is higher than what I'm viewing through the scope. Even so, using the peripheral flood portion or the "halo", I was still able to see clearly and well enough 100+ yards down range. However, I think I'll try a thin piece of cardboard or card stock as a shim in the front of the mount only because I'm loosing some valuable real estate of the light, it's not being used efficiently.
So, my youngest and I set up after dusk last night. I had been hearing coyotes all around earlier in the evening. We didn't set up until it was already too dark for just a scope without any other light source. I didn't use any bait or decoy. I turned the light on and with just a Bluetooth speaker and an app on my phone, I used a locator call and several minutes later, followed up with a cottontail in distress call. Almost immediately after the distress call, I saw red eyeshine. But only for a second. It started up the hill but didn't come back in to view, it disappeared along the hill where the light couldn't touch it. But it had come straight at us. My daughter and I are not the quietest hunters together. I'm almost positive we spooked it. So it can wait for another night.
Now some photos of how it's set up. On the 835, it's mounted to the CDM Gear MTR clamp using the provided 3 slot rail on the side opposite of the sling point. On the 835, the spot beam seems to match up closely with the sights. I'm going to test this soon at 40 yards, maybe this evening. I'll do a short video on a target and see how it turns out.
And then on the rifle it's on the other side of the firearm. I'm doing it like this to keep things simple with the picatinny light clamp.