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Posted: 12/18/2025 7:03:35 PM EDT
[Last Edit: triburst1][Edited]
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Whole. Lee. Shit. I’ve had a 640 Pro 1000 lumen light on my suppressed 10.5 for home defense use for the past several years. I’m in the process of outfitting a Beretta A300UP and swapped the light over to the shotgun and replaced it with a 640 DFT. Good lord, that super concentrated turbo beam is too damn much in the house. From down the hall, it completely washes out the reticle on every optic I have.  I guess I’ll put it on my AR10 and get another non turbo |
“It does not take a majority to prevail, but rather an irate, tireless minority keen on setting brush fires of freedom in the minds of men”
- Samuel Adams
- Samuel Adams
Joined:
Dec 2022
Posts:
1366
EE: 100% (42)
SC, USA
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I've been using turbo's since they came out. My duty carbine and pistol have turbos. Countless houses/buildings cleared, and I haven't experienced this. Admittedly my pistol has a RMR HD on it, and the auto adjust with a turbo is literally the best combination ever. Otherwise, the T-2 gets set to a level its visible with the light on. Fairly simple to be honest. |
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Originally Posted By Marksman14: I've been using turbo's since they came out. My duty carbine and pistol have turbos. Countless houses/buildings cleared, and I haven't experienced this. Admittedly my pistol has a RMR HD on it, and the auto adjust with a turbo is literally the best combination ever. Otherwise, the T-2 gets set to a level its visible with the light on. Fairly simple to be honest. I’ve got X300 Turbos as well. The 66,000 candela on them and the 100,000 candela on the 640 DFT is some whole different shit. I’m not complaining, it’s awesome outside and will be great at distance but is insane off a light colored interior wall at 30 feet. |
“It does not take a majority to prevail, but rather an irate, tireless minority keen on setting brush fires of freedom in the minds of men”
- Samuel Adams
- Samuel Adams
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Originally Posted By triburst1: I’ve got X300 Turbos as well. The 66,000 candela on them and the 100,000 candela on the 640 DFT is some whole different shit. I’m not complaining, it’s awesome outside and will be great at distance but is insane off a light colored interior wall at 30 feet. Work with it a bit. The advantage it has outside over a regular light is absolutely insane. Inside guns can become outside guns relatively quickly. We literally have turbo's on all of our work rifles, and most of the work done with them is indoors. Its literally never been a problem. I also like it on my shotgun, because the beam size at 25 yards is very very close to how my LE13200 patterns  You can also drop the output slightly by using 123's. |
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Originally Posted By Marksman14: Work with it a bit. The advantage it has outside over a regular light is absolutely insane. Inside guns can become outside guns relatively quickly. We literally have turbo's on all of our work rifles, and most of the work done with them is indoors. Its literally never been a problem. I also like it on my shotgun, because the beam size at 25 yards is very very close to how my LE13200 patterns You can also drop the output slightly by using 123's. With the 18350 model you can cut the lux roughly in half with a 123. |
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Problem solved. Problem staying solved. I’ve toyed with the idea of two WMLs before but I should have done this a long time ago. The 640 Pro was perfect inside. The 640 Pro DFT is amazing outside. Now I have 1500 lumen flood, 100,000 candela or both at the flick of my thumb. Neither are in my sight picture and I can shoot around cover from either side without blinding splash back. I will swap out the pressure pad for Surefire’s rail mount clickie but this is awesome. Attached File |
“It does not take a majority to prevail, but rather an irate, tireless minority keen on setting brush fires of freedom in the minds of men”
- Samuel Adams
- Samuel Adams
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Originally Posted By triburst1: Whole. Lee. Shit. I’ve had a 640 Pro 1000 lumen light on my suppressed 10.5 for home defense use for the past several years. I’m in the process of outfitting a Beretta A300UP and swapped the light over to the shotgun and replaced it with a 640 DFT. Good lord, that super concentrated turbo beam is too damn much in the house. From down the hall, it completely washes out the reticle on every optic I have. I guess I’ll put it on my AR10 and get another non turbo What optics? That is one thing I have not checked. Originally Posted By Claytonhoneyberry: It’s an issue that can be overcome with training, which most don’t do. Truth hurts. Maybe read the post, training doesn't fix your reticle being washed out. |
| I like bad guys having to deal with photonic barriers, making it harder for them to see me thru the light I’m shining in their face. I like the odds in my favor, not the bad guys. |
Your painted rifle is ugly, but I’m uglier, so send it to me and I’ll make it look good!
If it weren’t for double standards, we’d have no standards at all.
If it weren’t for double standards, we’d have no standards at all.
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Throw a flip off diffuser on the Turbo. Problem solved. No second light needed. On a side note... if a DFT washes out the reticle of every optic you have... get better optics. You may have a stupid bloomy reticle but every optic should be able to overcome your weapon light on the highest setting. |
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Originally Posted By Wake27: What optics? That is one thing I have not checked. Maybe read the post, training doesn't fix your reticle being washed out. Training takes into account properly setting your optic to work with the light you have on your rifle, so it absolutely is a training issue. There is absolutely nothing about this light that makes it too bright for inside a house. |
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Originally Posted By Marksman14: Training takes into account properly setting your optic to work with the light you have on your rifle, so it absolutely is a training issue. There is absolutely nothing about this light that makes it too bright for inside a house. Originally Posted By Marksman14: Originally Posted By Wake27: What optics? That is one thing I have not checked. Maybe read the post, training doesn't fix your reticle being washed out. Training takes into account properly setting your optic to work with the light you have on your rifle, so it absolutely is a training issue. There is absolutely nothing about this light that makes it too bright for inside a house. Oh, I can crank the optics up high enough that they don’t wash out, but at that point they completely overwhelm the target without the light in any sort of low light environment. Indoors, with light walls, the high candela light essentially forces me into an either/or situation versus a high lumen light that works with optics not set for Antarctica in full sun. |
“It does not take a majority to prevail, but rather an irate, tireless minority keen on setting brush fires of freedom in the minds of men”
- Samuel Adams
- Samuel Adams
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Originally Posted By triburst1: Oh, I can crank the optics up high enough that they don’t wash out, but at that point they completely overwhelm the target without the light in any sort of low light environment. Indoors, with light walls, the high candela light essentially forces me into an either/or situation versus a high lumen light that works with optics not set for Antarctica in full sun. Yeah, that can happen. Don't clear a dark structure looking through your optic, and don't shoot things you haven't illuminated and you won't have these issues. Optics should always be set for how you engage. If you shoot random shit in the dark, keep it low. For most of us, that can lead to mistakes that lead to prison sentences. I can't tell you how many structures I've cleared with a T2 and a turbo, and I have never had this issue. |
| Some people act like you can't function without a 1 million lumen light because you can't light up a ground hog at 600 yards. For their purpose, that may be true. I have some crazy throwers, so I get it. However, for most regular homeowner type folks, they don't need a light outside that lights up a tiny target in brush hundreds of yards away. It isn't necessary for what they need a light on a rifle for. If you decide it is, go for it and learn to live with the sacrifices that come with it when indoors. I find a light with 1000 lumens or less without a hyper-throw reflector much better indoors, and some good spill is really helpful. Heck, I don't even mind the old Surefire 600 with 500 lumens and 13,000 candela for indoor use. I'm not endorsing that light, but even that is perfectly adequate for general homeowner use. The average homeowner isn't clearing a warehouse or whatever a LEO might have to do. That isn't to say high lumen lights with blazing hotspots and a highly focused beam can't be used successfully indoors, but they introduce challenges that may be a net negative for your use. Learn how people are using bright lights indoors, try that for your situation, and if it doesn't work well for you, stick with a less intense light. |
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Originally Posted By BlindFaith429: Just picked up one on sale from Primary Arms to throw on my 11.5" DD upper. Trying to outfit it as a general use / HD / SHTF type role. I knew this light would be bright, so some very good points / info in here for me to ponder while I wait for it to arrive. You’ll be fine. |
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Originally Posted By Marksman14: Jesus. Just turn your optic up and take a training class. This is not complicated. Originally Posted By Marksman14: Originally Posted By RD20: Rubber band a black piece of cloth over the head to reduce the light output. Jesus. Just turn your optic up and take a training class. This is not complicated. He already said the light washes out his optic. And, try to not to assume people can just go train like it's going to the grocery store. |
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Originally Posted By triburst1: Whole. Lee. Shit. I’ve had a 640 Pro 1000 lumen light on my suppressed 10.5 for home defense use for the past several years. I’m in the process of outfitting a Beretta A300UP and swapped the light over to the shotgun and replaced it with a 640 DFT. Good lord, that super concentrated turbo beam is too damn much in the house. From down the hall, it completely washes out the reticle on every optic I have. I guess I’ll put it on my AR10 and get another non turbo OP, In all honesty, if the light is for a home defense weapon, then a white light will cause your eyes to want to involuntarily close as soon as you turn it on if you're needing to use it after having closed your eyes for awhile. There's other options, I gave you one and know it'll work because I have the exact same flashlight, or you can buy green or red lights that are easier on the eyes that aren't nearly as bright, but will cast enough light to ID a person or a thing, and if those are still too bright, then an appropriate cloth can be thrown over it to reduce light output. |
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Originally Posted By RD20: He already said the light washes out his optic. And, try to not to assume people can just go train like it's going to the grocery store. You suggested cloth with a rubber band over the light. Just reminding everyone of this. So yeah. Take a class. Or stick with your 870 and birdshot. But please, for the sake of impressionable new gun owners who maybe reading your posts, just stop posting. |
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Originally Posted By RD20: OP, In all honesty, if the light is for a home defense weapon, then a white light will cause your eyes to want to involuntarily close as soon as you turn it on if you're needing to use it after having closed your eyes for awhile. There's other options, I gave you one and know it'll work because I have the exact same flashlight, or you can buy green or red lights that are easier on the eyes that aren't nearly as bright, but will cast enough light to ID a person or a thing, and if those are still too bright, then an appropriate cloth can be thrown over it to reduce light output. 
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Originally Posted By Marksman14: You suggested cloth with a rubber band over the light. Just reminding everyone of this. So yeah. Take a class. Or stick with your 870 and birdshot. But please, for the sake of impressionable new gun owners who maybe reading your posts, just stop posting. Originally Posted By Marksman14: Originally Posted By RD20: He already said the light washes out his optic. And, try to not to assume people can just go train like it's going to the grocery store. You suggested cloth with a rubber band over the light. Just reminding everyone of this. So yeah. Take a class. Or stick with your 870 and birdshot. But please, for the sake of impressionable new gun owners who maybe reading your posts, just stop posting. 
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Your painted rifle is ugly, but I’m uglier, so send it to me and I’ll make it look good!
If it weren’t for double standards, we’d have no standards at all.
If it weren’t for double standards, we’d have no standards at all.
 High lux lights and red dots indoors |
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This is why I use the Meprolight Tru-Vision SR w/its auto-brightness control. Even w/my 77k Candela Streamlight I've always had a usable reticle except against a white wall literally 5' away. Under all other ranges & lighting conditions I don't have to worry about reticle washout. |
Eternity is coming for us all. It cannot be denied, debated or avoided.
We would do well to ponder how we're going to spend that eternity, because eternity is a long time to be wrong.
We would do well to ponder how we're going to spend that eternity, because eternity is a long time to be wrong.
Joined:
Mar 2026
Posts:
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EE: 0% (0)
GA, USA
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The solution was posted just above. I have a T2 set to 7, and keep the front black cap closed 24/7. Shoot with both eyes open, and it doesn't matter if you're using 5 or 5,000 lumens, you'll aways have the same easily visible red dot in front of you. I personally went round and round with this until I tried it with the cap closed. |
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