Night vision muzzle flash
- Thread starter smokem
- Start date
BAYSTATE YOTE
Active member
Not if they have the auto gated feature..
Our D740's are autogated. I never had a problem with follow up shots with the 7.62x39 upper. BRB has his on a Grendel and he had a 1+ second delay when his scope shut down...... Difference? I have a flash hider, he had a crowned barrel.
He had his barrel threaded for a flash hider, and problem solved!
F1
He had his barrel threaded for a flash hider, and problem solved!
F1
SkyPup
New member
That depends on a number of factors, but for picking up a coyote out 300 yards IMHO the PS-24 will work better for detection than a PVS-14 will.
You can see him with the PVS-14, but first you have to detect him and most likely that would require shining an IR illuminator to get his retinas to light up if he is looking your way.
PS-24 will detect him no matter where he is looking or lurking more reliable than NV.
You can see him with the PVS-14, but first you have to detect him and most likely that would require shining an IR illuminator to get his retinas to light up if he is looking your way.
PS-24 will detect him no matter where he is looking or lurking more reliable than NV.
kyle crickenberger
New member
+1 on the suppressor, I knew there had to be an answer for the follow up and running shots. I find the flir kicks the pvs [beeep] in open hardwoods for detection. I would say it's a 50/50 split in open fields although 300+ yard detection goes to the flir. It is easier to spot them especially if they are not looking directly at you and you do not have eye shine. Maybe that's where a 3x lens on the pvs would really shine! For the guys that can use suppressors, do yourself a favor and purchase one, you will not regret it. I run a yankee hill phantom ti and a silencer co. Harvester and love them both! 
HTRN57
New member
All Gen 3 night vision tubes are equipped with a high light cutoff feature that basically shuts the unit off momentarily if the muzzle flash is too bright or when other bright light sources are introduced too quickly with the unit in operating mode (such as turning on a powerful IR device in a closed in environment). All Gen 3 tubes have this feature regardless of the vintage so purchasing an auto-gated tube does not really help with this issue. Auto-gating basically allows the user to see better (less blurred images) when viewing brighter lighted areas such as street lights and headlights from a vehicle coming towards you. Auto-gating also reduces the halo somewhat around bright light sources such as a street light. Hope this helps, Kevin
Victor_TNVC
New member
To clear up the naming conventions. There is auto brightness control (ABC) and Autogated Power Supplies (AG).
Vintage NV intensifier tubes only had ABC and shut off systems when it senses too bright of a condition and also dim down with 30-40% loss of resolution.
Now with the advent of AG Power Supplies in modern intensifier tubes, not only due they dim down much more efficiently than ABC, they also maintain the resolution of the target being looked at no matter how dim the image gets.
HALO while getting somewhat reduced with AG systems is mainly a product of the tube manufacturing process and tube HALO values that plays into the equation.
Vic
Vintage NV intensifier tubes only had ABC and shut off systems when it senses too bright of a condition and also dim down with 30-40% loss of resolution.
Now with the advent of AG Power Supplies in modern intensifier tubes, not only due they dim down much more efficiently than ABC, they also maintain the resolution of the target being looked at no matter how dim the image gets.
HALO while getting somewhat reduced with AG systems is mainly a product of the tube manufacturing process and tube HALO values that plays into the equation.
Vic
Victor_TNVC
New member
Originally Posted By: smokemDoes the bright light of a muzzle flash cause night vision scopes any problems?
Besides what I posted above on ABC and AG Power Supplies, we have done many types of studies on flash hiders and their effects on NV several years back. Obviously as some have mentioned, a sound suppressor is the way to go for total flash elimination. Two other flash suppressors that virtually eliminate flash are from Smith Enterprises (Vortex Line) and the newer B.E. Meyers FH stuff is VERY good.
One other important aspect folks sometimes forget about is not only the flash but also unburnt powder that can and does cause a 1/4 second fogging effect or longer based on rapid fire or lack thereof. This smoke effect is also based on ammunition used along with barrel length etc. Another reason to also use a sound suppressor which also mitigates unburnt powder effects.
Hope this helps a bit more.
Vic
Besides what I posted above on ABC and AG Power Supplies, we have done many types of studies on flash hiders and their effects on NV several years back. Obviously as some have mentioned, a sound suppressor is the way to go for total flash elimination. Two other flash suppressors that virtually eliminate flash are from Smith Enterprises (Vortex Line) and the newer B.E. Meyers FH stuff is VERY good.
One other important aspect folks sometimes forget about is not only the flash but also unburnt powder that can and does cause a 1/4 second fogging effect or longer based on rapid fire or lack thereof. This smoke effect is also based on ammunition used along with barrel length etc. Another reason to also use a sound suppressor which also mitigates unburnt powder effects.
Hope this helps a bit more.
Vic
R15 Predator
New member
If you are not using a supressor, the shorter the barrel the more muzzle flash. Muzzle flash will shut down your scope for a second to three. If you are not going to run a supressor consider a longer barrel and a brake that ports forward.