Sighting in a Bushnell Red Dot Trs-25

[Ninja]

Hello Im new to red dots and rifle shooting .I got this rifle to take my daughter out to the range and have some fun and I could use some help how to sight in a Bushnell Trs-25 in on my 15-22 MOE, I got a UTG 1 inch riser on it and a Gps02 grip pod.

 

[CrazyFingers]

Does it "absolute co-witness" with your irons? If so, make sure they're sighted properly, and adjust the dot to match the irons.

 

[dbuffington]

Hello Im new to red dots and rifle shooting .I got this rifle to take my daughter out to the range...

Good dad!

There are plenty of online instructions for sighting in a rifle scope, like…
How to Sight-In a Rifle
...and the same principles apply to a red dot.

And let me throw in a few hints…

- Start at short range, 25 yards max.

- Use a big target (which can be as simple as a big piece of paper with a dot in the center) so you can see where you’re hitting. Unless you’ve used some kind of device (like a boresighter) get things roughly sighted, you can be two feet or more off target to start.

- Adjust one direction at a time. Trying to make horizontal (windage) and vertical (elevation) adjustments at the same time can get really confusing. I get the windage right first, and then do the elevation.

Enjoy!
Dave

 

[Scuds03]

I have the TRS-25. Just remember that which ever way you turn the adjustment, thats which direction your bullets will hit. For example if you shoot at the bullseye but you are hitting low, turn the elevation in the UP direction to get on the bullseye.

Sweet rifle!

 

[scooter123]

Because of the high degree of offset between the sight and barrel I would suggest taking a slightly different approach during the initial sighting in process. The problem is that at close ranges you can create a converging sight line in relation to the barrel. Because of this there is a risk that your initial shots could clear a shooting berm at the back of the range, a huge no-no.

Measure the distance between the center of the sight and the center of the barrel. Then place 2 contrasting dots on your target that are seperated by that distance. When you start out at say 30 feet, aim for the high dot and adjust the sighting so that your bullets impact the lower dot. Once you have it dialed in at 30 feet you can then run your target back to 25 yards and do your final tuning for the sighting.

 

[TacticalTom]

I have this optic on my 15-22...I'd say first change the riser to a UTG .83" for absolute co-witness...the 1" is a tad too high. Find a nice bench and rest the rifle so that your dot rest solidly on the intended target...I suggest also using the lowest visible illumination setting....then take five shots...keep them dead-on your intended target....check your work then make adjustments using either the elevation or windage setting screws...just remove the water proof caps and use a small coin or flat head screwdriver...there are arrows indicating desired direction of turning and make these in only 180 degree increments until you have it where you want. Mine was Four inches low out of the box...windage was right on. Easy to use and adjust little optic...very light weight, which is great for this rifle. Good luck and shoot straight.

 

[DaveFJ80]

I have this optic on my 15-22...I'd say first change the riser to a UTG .83" for absolute co-witness...the 1" is a tad too high.

This is what I was about to say. I have both a 1" and .83" UTG riser, and the .83" riser co-witnesses perfectly with the front & rear sight.

The only thing I don't like about the red dot is that you need to zero it in for a specific distance and shoot that range to get accurate hits. If I zero in my TRS at 25 yards, and then shoot at 15 yards I'm then shooting too high. Likewise if I zero in at 15 yards and shoot at 25 yards, I shoot too low. With my front & rear irons on my 15-22, I'm accurate anywhere from 10 yards to 25+ yards.

 

[chuck s]

You're going to get the same zero with the irons or dot sight if they're mounted in-line with each other. If you zero at 25 yards you'll be LOW at 15 yards unless your muzzle velocity is very slow. The 2-1/2" sight height above bore means the bullet has to climb that high to hit at 50 yards and will still be on the upward curve of trajectory at 25 yards. Your bolt gun sights are not that high.

I've posted zeroing instructions in the past couple of days so won't repeat them here.

Get your dot co-witnessed with the irons and just move the dot to the tip of the previously zeroed front sight.

Note battlesight with .22LR is really only effective in the 0-75 yard range. Zero at 50 and you'll be close within those ranges. Bullet accuracy variations will make a difference and you should not expect X-ring accuracy with a dot sight or the irons shooting battlesight, but I can chase shotgun hulls around the range with mine and a little hold-under at closer ranges.

-- Chuck

 

[TacticalTom]

You're going to get the same zero with the irons or dot sight if they're mounted in-line with each other. If you zero at 25 yards you'll be LOW at 15 yards unless your muzzle velocity is very slow. The 2-1/2" sight height above bore means the bullet has to climb that high to hit at 50 yards and will still be on the upward curve of trajectory at 25 yards. Your bolt gun sights are not that high.

I've posted zeroing instructions in the past couple of days so won't repeat them here.

Get your dot co-witnessed with the irons and just move the dot to the tip of the previously zeroed front sight.

Note battlesight with .22LR is really only effective in the 0-75 yard range. Zero at 50 and you'll be close within those ranges. Bullet accuracy variations will make a difference and you should not expect X-ring accuracy with a dot sight or the irons shooting battlesight, but I can chase shotgun hulls around the range with mine and a little hold-under at closer ranges.

-- Chuck

Chuck,

excellent point...I forgot to mention that 50 yards would be an ideal starting point for zeroing this optic.

 

[ScrapmasterFlex]

Curious how you like this sight...? I use two Aimpoint Micros that I've decided I love... When I was at Cabelas looking at these, Bushnell has a few red dots, I like Bushnell quite a bit but I couldn't pull the trigger on them.

I decided to buy a Primary Arms but I never bought that either, so I still don't have a cheaper red dot. So still curious, how you like and how they work?

 

[chuck s]

The $79 SigntMark red dot sight works well on my 15-22 and looks and operates like the Aimpoint if mimics. Really no need to spend Aimpoint level dollars on this rifle especially if, like me, you're shooting bulk .22LR ammo at short ranges.

Minute of paper plate at 50 yards offhand is effective shooting. That's the 0 ring on an IDPA target. Do that with the M&P15-22 and you 'll be as good or better with 5.56mm ammo at longer ranges.

-- Chuck

 

[mn_doggie]

This is what I was about to say. I have both a 1" and .83" UTG riser, and the .83" riser co-witnesses perfectly with the front & rear sight.

The only thing I don't like about the red dot is that you need to zero it in for a specific distance and shoot that range to get accurate hits. If I zero in my TRS at 25 yards, and then shoot at 15 yards I'm then shooting too high. Likewise if I zero in at 15 yards and shoot at 25 yards, I shoot too low. With my front & rear irons on my 15-22, I'm accurate anywhere from 10 yards to 25+ yards.

I, too, have both the 1" and the .83" and the .83" is perfect for my TRS-25. Since the diameter is pretty small I feel that ya gotta have fold down sights and then cowitness only when the battery is dead.

On another firearm, I have a 40mm red dot. Then I cowitness 100% in the lower 1/3 with nonfolding sights.

Right now I have my TRS-25 hanging off to the left with a Blackhawk offset mount. Still not sure how well I like that...