Sightmark Pistol Boresight with Red Laser

I recommend using a vise to hold the gun firmly in place for the entire zeroing, so that the "point of impact" revealed by the boresight - marked on a target paper in ink - can remain fixed, the battery can be removed, and the point of the adjustable gunsight can be adjusted (whether red dot or laser sight or barrel gunsight) to coincide with where the boresight was set. It fit perfectly the 38 special it was bought for. I thought it might also fit 9 mm, and even 380 cal - it does not. Strangely, the rim is undersized - the ejector of the revolver cylinder does not catch it to eject it - but I don't hold that against the company; the item works as advertised on what it was designed for. The laser was centered perfectly - straight down the center of the bore - for the 50' distance to the target I wanted: rotations of the boresight within the revolver cylinder produced no visible "circling" on the target. Battery life is not advertised to be long - I think it was to be <1hr of actual "laser on" time - so don't waste time. Take out the batteries when you've learned what adjustments need to be made, replace them only when you are ready to actually verify, then remove them again. It's all easy enough.

I purchased a new Taurus model 66, 4" barrel 357magnum from a brick and mortar gun store in Arizona. Either someone tightened down the sight adjuster screws at the gun store, at the factory or they were never adjusted to start with at the factory, but the result could have been disastrous. At 7 yards it hit 16" low and 12" to the left of center of target. I have several other sizes of Boresight lasers, but not one for the 357mag/38special. I received this one the next day from Amazon. It was slightly sloppy in the chamber, but I did as another reviewer suggested - I put one wrap of Scotch tape (with NO overlap) around the boresight cartridge and it then fit perfectly. Sighting it in was then about a 15 second process. Now the gun shoots right dead center on target as it should have from the factory.

Bought this to sight in a new Henry Lever Action Rifle that I bought. Prior to sighting the rifle in I checked it against my S&W 686, which is dead nuts on target at between 10-15 yards. THey matched up almost perfect. No adjustments to pistol as it gets a shot check every week at the range and will probably always remain my all time favorite revolver. Put it in the rifle to sight the new scope at about 75-100 yards. Lined them up and then took it outsdie to check. About an inch low and an inch left at 100 yards. Not bad for a first time sight. Greatly reduced the amount of ammo I would have used dialing in the scope and rigle combo. Will recommend and would buy again. In fact I will in several calibers.

I've been tempted to get some sort of laser boresight for a while, and the acquisition of an H&R Handi-Rifle in .357 finally pushed me over the edge. There's a lot to like about this unit- and a few irritating things as well. Let's start with what I like about it. First of all, it's really easy to use. Insert the batteries, slip it into the chamber, point the weapon at a distant target, and align the red dot with the sight or scope. Simple. It took me less than a minute to get my rifle ready for the range. Second, each unit is individually aligned- you can see the alignment screws used to do this. And last, the price is right. For not much more than the cost of a box of ammunition (more or less) you can align your gun so it will at least put those first shots on paper. The bits I don't like: First: The .38/.357 is a rimmed cartridge- but there's no rim on this boresight. In my .38 S&W K-frame, it slid in until it reached the end of the chamber in the revolver, protruding just far enough to pull it out when I wanted to remove it. In the Ruger Blackhawk, it disappeared into the cylinder, as the cylinder is bored more deeply; luckily it slid out easily. But in my H&R rifle, it disappeared into the chamber and wouldn't come out when I tilted the barrel upwards; it had to be removed with a cleaning rod. Putting a rim on the brass piece that screws into the back would have added a negligible amount to the cost of manufacture but would have made it much easier to use. Second: There's no on-off switch, and battery drain is high. Turning it on and off requires the insertion and removal of two extremely small batteries- easy enough to do at home, but at the outdoor range one or more pieces are liable to disappear. A simple switch could have been implemented a number of ways. Last, the fabric case has a pocket to hold the batteries that's open at one end, and doesn't really hold the batteries very securely. A snap-open plastic case would be more secure, and perhaps cheaper to make as well. For now I'm keeping mine in the bubble packaging it arrived in, but I plan on finding a small translucent polypropylene box I can store the boresight and several spare batteries in it. But the positives outweigh the negatives. This is a very useful piece of gear that's easy to use and cheaper than any decent traditional optical boresight. With the shortage of ammunition and reloading components today, it's a good tool for conserving ammunition, too.

Makes sighting in a breeze. Does not get easier than this

Perfect and delivered very fast thank you

Not accurate. You can actually see that it will not be accurate when you first look at the laser hole and see that it is physically out of alignment. Therefore, I did a rotation test at 15 feet. A rotation test is easy to setup: 1) Find any surface that also has a smooth-even groove on it that will hold the boresighter in the same place if you rotate it. 2) Make sure boresighter is pointed at a wall at a distance of your choice. 3) rotate the boresighter with your index finger. The result of my rotation test was a 1 inch difference at 15 feet. Can you imagine how inaccurate it would be at either 25 feet or 100 feet ? The product description says the laser can be adjusted via adjustment screw(s), but the adjustment screw does not move as it is glued in. The customer should not have to adjust anything; plus, most people do not have a mini screw driver that tiny, so now the customer is forced to buy a jewelers tool kit to adjust something that should already be zeroed-in at the factory. My advice is do not waste your time either adjusting or finding a mini screwdriver. The only reason I bought the Sightmark 357/38 boresighter is because my preferred company does not make a 357/38 boresighter. Not sure why Sightmark Factory QA cannot do a simple rotation test on each boresighter before it is allowed to leave factory, but it is made in China so they do not care. The Sightmark company is basically saying "adjust it yourself".

With today's panic ammo prices it's good to have an edge on dialing in a fresh weapon. The Sightmark does it. While I've seen many remarks that the batteries don't last I've had no problem with that. I've zeroed in scopes and red dots on the original set of batteries with no end in sight. Revolvers or semi autos makes no difference. I even went as far as to remove the Sightmark, reload it and double check my adjustments. It's been spot on each and every time and the batteries have held well. This doesn't mean I didn't buy spares. If you don't want to spend your money on ammo but spend your time accurately shooting the Sightmark Boresight is the way to go. I mean, really? What else can you use while sitting in your living room and coordinating your crosshair/red dot sight without having to punch holes in the wall? I know my neighbors appreciate it. GRIN

Zum groben Ausrichten der Waffe auf 10 m ok. An sonst zu geringe Leuchtkraft. Ein Einstellen auf 25 m ist nicht möglich

Ich wollte den Laser nutzen, um mein Aimpoint zu justieren. Leider war aber die Lichtquelle zu schwach, um bei adäquater Beleuchtung in einer Entfernung von 25 m den roten Punkt ohne technische Hilfsmittel vernünftig ausmachen zu können. Mit einem Glas ging es dann leidlich, machte die Justierung aber nicht leichter. Vielleicht aber billiger, vielleicht - ist schlecht einzuschätzen. Nachdem ich Reddot und Laser abgestimmt habe, hat sich anschließend aber gezeigt, dass die Abstimmung eigentlich nicht viel gebracht hat. Ich benötigte trotzdem noch einige Gruppen für die abschließende Einstellung des Aimpoints. Alles in allem hätte ich das Geld für den Laser in etliche Trommelfüllungen investieren können. Alles in Allem glaube ich war der Kauf sinnlos.