SiteLite Ultra Mag Laser Professional Boresighter

I've tried the cheaper systems and the bore site inserts by caliber...all wasted money as they are all wildly inconsistent. If you're careful to find the right o-ring for your caliber and use silicone grease so it slides in smoothly, this thing is spot on to center each time. It is a little tricky to use on compact pistol barrels but you can make it work.

For this hunting season, I didn't have time to go to the range so I decided to use this laser to get my gun sighted. The program was very easy to use and I just followed the instructions to a T. I laser sighted my gun at 10 yards and was a little hesitant if it'd still be accurate enough (if I had to shoot past 50 yards).First day I went out for big game, I tracked down a 450lb black bear and was able to put a bullet right through the heart on the first shot at roughly 70 yards. I was very impressed with the accuracy of the laser and the program.Thanks SiteLite!

Easy to order , great for sighting in weapon

If you are looking for a quick review with a thumbs up or down this probably isn't the review for you.I've been using a variety of cheaper bore site tools for my various firearms for a few years before learning that this product existed... my experience with chamber inserted bore site lasers has always been pretty poor. Since the chamber type tool has to fit a variety of weapons it fits fairly loosely into the chamber and every time you reinsert it the laser will be off from the previous insertion. Additionally they are tiny and burn through a set of batteries in just a couple of minutes and those batteries aren't cheap.The SiteLite overcomes some of the issues with other products. Namely, it is introduced into the muzzle end of the bore and has a machined aluminum rod to make sure that it is pretty closely aligned with the bore geometry. Tight fitting is achieved with provided o-rings as well as adapters for certain weapons like shotguns that are larger caliber. Since it is a larger unit it is able to use a proper battery and claims a continuous run time on the laser of about 40 hours which is phenomenal. Unlike the cheap tools it is also made in the USA, and comes with a quality case that can be used for storage as well as transport to the range. Honestly for the money it is pretty hard to beat, but I do have a few criticisms.Here's the bore site process, if you want to do it properly;1. You need a minimum of 8 yards between the end of the muzzle and the computer generated target. For many of us it will be possible to do this in a basement, but even apartment dwellers might be able to get an eight yard distance from one end of their unit to the other. You shouldn't ballpark this you should actually get out a tape measure and get it as close as you can. In my basement I taped off 10 yards and marked it on the floor so I knew where to align the barrel for any weapons I was sighting in.2. The weapon needs to be positioned properly and leveled. I recommend using a bubble level along the bore if possible, it doesn't need to be exact but should be as close as you can get it and it needs to be stable so that you can adjust the sights without lots of weapon movement. I put mine in a shooting rest for this purpose and use a utility cart in my basement to make it easy to move around.3. The weapon caliber, height above bore of the center of scope (can be easily figured out with calipers), ammunition type (information can easily be found online for the type of ammo you have if you aren't familiar with this info) and other information needs to be plugged into the easy to use software. This will generate your target. You can either choose "true" zero (where laser spot overlaps with crosshairs) or if you choose a shorter target position range then the software will generate a target where the laser spot is below the crosshairs. In my opinion this is actually preferable as I have red dot sights and it can be hard to make out the difference between the red laser and the red dot.4. Print the target, and rough position it on your surface that is the appropriate distance (8 yards, etc.) away from the weapon muzzle. Obviously your weapon should be unloaded while you are doing all of this.5. Lube up the o-rings with some vaseline or similar petroleum or silicone based lubricant. Do not use weapon lube (it might corrode the o-rings or build up on them and cause the bore sight to not fit properly). Anyone writing reviews about chewing up o-rings clearly missed this step which is right in the instructions. If you are using a weapon .30 caliber or larger thread on the adapter and choose the appropriate sized o-ring. There is a chart that makes this pretty easy to figure out.6. Insert the bore sight laser into your bore and turn it on. Position it so that it is aligned properly with the target and then adjust the target position on the far wall so that it is level and the laser spot is directly on the "laser" designator on the target.7. Now just adjust your weapon crosshairs, red dot, etc.8. You've just boresighted your first weapon. Once you get the hang of it you can do multiple weapons in one calibration session.This tool is not perfect. The tiniest of variations in the calibration procedure can result in offsets at the range when you do final zero in of the gun. Additionally different barrels, ammunition, etc., will behave differently. It is highly unrealistic to expect that you will zero with this tool and then upon testing your weapon at the range find that you are dead center on target at 100 yards. Keep in mind that the shorter distance you do the calibration the more errors are magnified at real distances. An error of .5 inches when calibrating at an 8 yard distance to the SiteLite target will correspond to an error of 6 inches at 100 yards at the range.For this reason you will get the most optimal result by calibrating at the "recommended" distance that comes up when you plug your information into the software. Unfortunately most of us don't have access to a range where we can get our muzzle exactly 27.6 yards or 43.6 yards or 50.2 yards from the target, so using the shorter calibration in our basements will have to suffice.So clearly I am pretty impressed with this target, so why did I knock the review down to 4 stars? Well, there are a few things;1. The bore site tool is too short to get properly seated into muzzles of weapons that have longer muzzle brakes. I have several such weapons which can have muzzle brakes over 2" and at that point you can tell that the bore site laser is not completely seated so your site in might not be as accurate as you'd like.2. For many of my carbines a zero distance of 50 or 100 yards is desirable or even necessary as some of these weapons employee optics that have ballistic drop compensators (BDC) that give bullet drop estimates for longer distances that assume a 100 yard zero. For CQB weapons I personally prefer a 50 yard zero as I know the holds out to 100 yards with a 50 yard zero and won't use those weapons at longer ranges. Unfortunately the Site Lite ballistic software routinely reports that the minimum zero distance possible (based on the height above bore of your scope, bullet, etc.) is 125 yards. While this is still going to get me close enough to make final tweaks at the range I find this limitation frustrating. It should be possible to zero to 50 or 100 yards since all that would be needed is the laser spot to move further up or down on the target. This is more a limitation of the Site Lite software than anything and the fact that it hasn't been updated since 2012 tells me that this sort of thing is not a priority for them.All in all though it's pretty hard to argue that this thing is worth the money you will spend on it. The quality is there, it has a lifetime warranty and is made here in the USA. If you are shooting larger calibers you can easily be dropping $1 or more per round, blowing a few rounds just to get your weapon on target and then more cartridges getting zeroed in gets very expensive.Feel free to look at the photos I provided that shows how I ran my calibration setup as well as what the software looks like.

So much to say about this boresight, but ill try to keep it relatively short and stick to the facts.I originally purchased a sightmark boresight. the kind that looks like a round of ammunition that goes in the breech end of the chamber. from the factory that item was flawed, as the laser showed off center to the right and down. Had I boresighted my new rifle with that product at home, im confident that I would have been a few feet off ay 100yds. I confirmed it was off with my sig sauer handgun that I know the sights are spot on.That lead me to purchase the sitelite, and spend a considerably larger amount of money on a boresight, but man am I glad I did!! This product is awesome! I used the ballistic software that it comes with, and input all my data including bullet shape, and grain, your optic height from centerline of the barrel etc. It then spit out a target for 8yds. The best thing about that is at 8yds, you can do that at HOME, and be sighted in for 100yds come range day. After using the sitelite with my new rifle and aimpoint pro, I was bout an inch off bullseye at 30yds windage wise, and perfect on elevation.If you don't want to go through 50 rounds at the range, I highly recommend this boresight!

I've been using a variety of cheaper bore site tools for my various firearms for a few years before learning that this product existed but this one is excellent. I strongly recommend it. Well made, strong, and precise.

I did ALOT of research before buying this. Have used many bore sights with varying degrees of success. This is THE best. The reports of the rubber spacers getting chewed up are by people who don't know what they are doing. Use a little bit of silicone grease or Vaseline (as instructed), just enough to make the washer shiny and it slides in no issues. Have tried multiple calibers including .22/5.56 and perfect function.Every other laser bore sight I have tried, if you spin it in the barrel it changes postion on the target or wall, not a perfect line down bore. Even just a small amount off center and you can see them move left and right. Spin this one and the dot is STATIONARY. Consistent line without deviation, it's as accurate as they advertise. This will do more than get you on paper. All the other ones with thier faults will do that. This gets you very close to spot on.

I have used the SL-150 a lot this summer to level reticles and bore sight new optics and it works perfectly. I have been on paper after one shot each time I have used it!I haven't had any issues seeing the red laser at the distances specified by the ballistics targeting software. I do set my targets up in a shady area of my back yard.Make sure to lubricate the o-rings as they will slip off otherwise.Great product that will save you time and money at the range.