Zero for laser on rifle

HornyToad

Private
Minuteman
Oct 23, 2019
60
15
I inherited an AR15 with a fixed 3X scope. I bought a Streamlight TLR2 HL G and mounted it on the underside of the free floating hand guard for CQB. My question is what distance should I zero the laser. 10yds, 25yds, 50 yds? Thanks!
 
Depends on how/where you will be using your AR...I ran a similar laser once on mine that I use for home defense and zeroed it at 7 yards. then practiced my holds with the laser on paper targets @ 3,5,7,10 yards.
 
I would play with a ballistic calculator.
You can enter negative sight height for your under the barrel laser and see what the trajectory looks like.
Remember that your bullet ALWAYS DROPS, right out of the muzzle.
For close ranges, there isn't going to be much difference from one AR round to another.
For example,
Try -2 inches, 62 grains, 2500 to 2900fps, and either a 25yd or 40yard zero for the laser.
Then use those values and see what a 7 or 10 yd zero does out to 50 yds. :) :) :)
ballistic_trajectories_chart_ce5d51f4.png


Scope on top (+2"), laser on bottom (-2") 25yd zero on both.
ballistic_trajectories_chart_scope-lazer.png
 
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I would play with a ballistic calculator.
You can enter negative sight height for your under the barrel laser and see what the trajectory looks like.
Remember that your bullet ALWAYS DROPS, right out of the muzzle.
For close ranges, there isn't going to be much difference from one AR round to another.
For example,
Try -2 inches, 62 grains, 2500 to 2900fps, and either a 25yd or 40yard zero for the laser.
Then use those values and see what a 7 or 10 yd zero does out to 50 yds. :) :) :)View attachment 7219226

Scope on top (+2"), laser on bottom (-2") 25yd zero on both. View attachment 7219229

Great, I'll study this for a bit. Thanks!
 
No, what zero?

With the laser in the bottom and the scope on the top at 10 yards your POA will be 2” high for the optic and 1.5” low for the laser. That’s a lot to remember.
 
I have one on my 10/22. Not as good as the Streamlight though. I would say 10-25 yards. Any more is not realistic for a laser. Again, yours is different. Try finding the dot in bright daylight and see what works.
 
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I have a green Laser on an SKS.
Daylight @ 25 yards and it works OK. I don't have to cheek down to use the open sights.
I guess for home defense hitting an inch or so low at a closer range probably isn't all that bad.
Zero the laser @ 7 yards and watch out for planes :)

LaserSKS.jpg
 
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If it’s home defense and your not worried about a hostage situation at 40’ with a 4” “opening”...it’s not going to matter.
zero it where you want 10-15-20 yards
Center mass won’t know the difference
 
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I know lots of people who use them and swear by them. I hate that they use batteries. I hate the way they screw up my natural aim. I just hate, hate, hate them in general (except the burning ones in the light-saber like cases). I would never rely on one at home and certainly wouldn't take one into battle. I'm probably more and more in the minority, but I think learning to point shoot with both pistol and rifle, rather than aiming using a sight or a laser, is a super huge and important shooting skill that everyone should develop, and I feel like lasers completely fuck that up. Again, good on you if they make you a better marksman, but they make me suck.

To me it's a target illuminator and the target is you. I get a bright, blinding light at night, but not a laser unless maybe it's 5w green beam that burns anything it hits like a MFer. Bursting into flames would definitely distract someone trying to shoot you.

Why you would need one up close is beyond me. Learn to shoot your firearms and you won't need a laser.

Rant off. I mean no disrespect, and as I said, I'm probably in the minority.

For whatever reason all that hatred turns to love when it's a reflex type sight (even the ones that use a laser for the dot)...
 
I use mine for a different purpose. I take young kids hunting. I have them line up crosshairs on the animal. I turn on laser and if/when correct I have them shoot. Saves me some tracking at times.
 
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I do an "infinity zero" (called several other names as well)

Zero the day optic at the normal distance.

Then, at night, with a PVS-14 looking thru the back end of the day optic (if the laser is an ir-laser) aim at something far away ... the farther away the better ... then adjust the laser elevation and windage until the laser is in the center of the cross hairs. And then you've zeroed your laser at the same distance your weapon is zeroed, without shooting and its very fast.
If you have a vis laser, you don't need the 14, but best to do it at night so you can see the vis laser several hundred yards out.

This could also be called a "parallel" zero, if you are far enough out.

==

I only shoot with ir-lasers at night and usually in the woods inside 150yds ... usually much closer, going after varmints near my chickens and calves.
 
... I use mine for a different purpose. I take young kids hunting. I have them line up crosshairs on the animal. I turn on laser and if/when correct I have them shoot. Saves me some tracking at times ...

Interesting! Allows the coach to see the POA as well as the shooter !

:)