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Sightmark .243, .308, 7.62x54 Boresight
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- - precision accuracy
- - reliable and durable
- - fastest gun zeroing and sighting system
- - reduce wasted cartridges and shells
- - compact and lightweight
- - easy to pack and travel
- - comes with a carrying case
- - Class III laser; 5mW or less
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The Sightmark Laser Bore Sight provides the most convenient and accurate method for sighting in rifles of all types. Simply chamber the bore sight like a regular bullet and a laser dot will show exactly where the rifle is aiming; it’s easy to sight in any scope without firing a single shot. Live fire is only needed to fine tune the weapon being sighted in order to compensate for inconsistencies, such as bullet drop due to distance. Perfect for hunters, competitive shooters and law enforcement, the Sightmark laser bore sight is sure to take the frustration out of sighting in almost any gun. It’s easy to use and will quickly save both time and money by avoiding prolonged live fire tests at the range; use the extra ammo for honing those shooting skills and for the hunt. A lightweight carrying pouch protects the laser for convenient use in the field. The Sightmark laser bore sight is available in several calibers and gages for use with all the most popular rifles and shotguns.
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I recently purchased a Rem 700 and Vortex optic for it. I got everything mounted on the gun and ordered the this boresight via Prime and it arrived on time without issue. I tested it in my house and saw the laser lit up fine and headed out the range this past weekend. Ideally I wanted to sight in my rifle at 100 years but after reading the direction it said to do it at 25. So I set up the target at the 25 yard line. Put the batteries in and saw the laser light up, then put boresight in the chamber and closed the bolt (the .308 version I got does not have the external battery pack and wire coming out, instead it uses hearing aid size batteries x2). After looking in the optic I could not find the laser dot anywhere on the target, my friend and I held a piece of white paper in front of it and walked out towards the target to see how far we could see it. At about the 10 yard mark it was barely visible and not visible at all at 25 yards. We pulled it back out and it looked as if the batteries where already dying off. At this point I was annoyed and assumed that the batteries where old as maybe it was sitting around Amazon's warehouse for too long. Headed home and figured I would get new batteries and try again in my house to at least get it so I can be on paper with the optic. On the way home a ran by wallgreens anre grabbed some brand new Duracells and once home put them in the boresight, to my amazement even with the new batteries I could not see the laser across my dark garage. It was just as bad as at the range if not worst. At this point I plan to do an exchange to see if maybe I just got a faulty one. If thats the case I will update this review.
One tip: I made 4 marks each 1/4 way around the laser and inserted the laser with each of the 4 marks pointing up. There was an average of 2-3 inches difference @50 yards depending on what mark was on top. I just recorded the results and zeroed the scope in the center and the rifle was almost dead-on.
The Sightmark boresight came with batteries and simple instructions. I put the batteries in and the laser lit up. Once I got it chambered I matched up the laser dot with the reticle and that was it. I did it in the late afternoon so the laser dot would be bright. My aim point was about 20 yards. Of course, at the range I would have to adjust the elevation for shooting at 25 or 50 yards, but windage should be the same. Sure enough, I was on paper and had to adjust the elevation while the windage adjustment was minimal.
In sum, this product worked perfectly to get my scope on paper. Some notes:
1) There is no on\off switch; once you put the batteries in and screw on the cap the laser is on. You have to take the batteries out when you're done. They are tiny little things. I used the corner of a plastic sandwich bag and rolled them up in it, and it fit in one of the little pockets in the fabric case.
2) Open the bolt and seat the boresight in the chamber as you would load a single bullet and don't let the bolt slam close as this would probably damage the boresight.
3) This is a low power laser, so you're not going to be able to see it on a bright day at 50 yards. Probably not even at 25 yards. That means you need to use it indoors or at around dusk if you use it outside. Using it indoors will limit the distance you can set your elevation at, but the windage will not be affected.
4) Boresights are not designed to set your scope for the bulls-eye. They help you get close enough that you're hitting your target, and you can go from there to get an exact adjustment.
I purchased this Boresight for a new rifle that I had recently purchased. When using it I found that it was not sized correctly for my rifle. (I double checked the marking on the side of the Boresight, which confirmed it was sized for my new rifle.) The last Boresight I purchased--from another manufacturer, was for a new AR I purchased. It worked like a charmed. Sighting in the AR was a breeze. I had tight groupings at 50 yards.
As such, I had every expectations that this Boresight would be just as good/effective. I ended up purchasing another Boresight from a different manufacturer.
Also, the battery life will deplete by 50% after about 10 minutes of use. Be prepared and buy back up batteries if you plan on sighting in multiple firearms. Also buy white target paper. You won't be able to see this tiny laser dot on the black "shoot and see" sticky targets.