What is a laser BORESIGHT? And what is it used for?

True North Arms Corp

True North Arms Corp

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Mounting a scope is only half the job — getting it properly aligned with your rifle is where things actually start to matter.

A common mistake is heading straight to the range and trying to zero from scratch. Without a reference point, this often turns into a slow and frustrating process, wasting both time and ammunition.

This is where bore sighting comes in.

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A bore sighter gives you a visual reference between where your barrel is pointing and where your optic is aimed. Whether you’re using a chamber-style laser or a muzzle-mounted unit, the goal is the same: get your rifle close to zero before you ever fire a shot.

It’s important to understand that bore sighters aren’t precision tools — they’re a starting point. Variations in the device, including slight misalignment in the laser itself, can affect accuracy. A simple way to account for this is to rotate the bore sighter and observe how the point of aim shifts. This helps establish a more reliable center reference before making adjustments.

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Taking a few minutes to do this properly can dramatically improve your experience at the range. Instead of chasing your zero, you’ll already be close — making final adjustments quicker, easier, and far more efficient.If you’re regularly mounting optics or switching setups, this is a step worth incorporating into your process.

If you need this for your adjustments, here's what we have for sale:

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Sellmark Laser Boresight (Variations) - CA$49.99 - CA$86.99​

CLICK HERE TO PURCHASE

Here is a video of Stanley and the "See" Can where he goes in depth about how boresights work and how they make your life easier👇
 
Very useful with semis and pumps and anything that isn't a bolt-action rifle where you can simply remove the bolt and visually boresight down the barrel, holding the rifle steady so you can compare what you see there with where the optic crosshairs sit. But honestly even that is a bit of a juggling act compared to simply steering the optic onto the red laser dot!
 
I'm a big fan of the free calibrated zero target from trex arms. Can usually get an on-paper-at-100yd useful zero in three rounds at the indoor 25 yard range, then another 3 rounds for a functional zero when I can get outdoors for a 100yd proof. I have also used boresight lasers with poor-to-moderate success, but I don't find them much of a time or money saver when 6 rounds will do the job. To each his own.
 
I like them
Have the type that slides into the muzzle end
Usually the first shot is close with another 1 or 2 to get on target
Instead of the 3 button batteries it used
i swapped in a Energizer A544 6volt

Used to have the bushnell with the different arbors
Worked good but was bulky and a bit of a performance

Still have a magnetic Leupold one
It works good as well but is a bit finicky
 
Our range has dirt berms that get dusty when dry and there are random rocks showing in the dirt.... If it's dry I will pick out a prominent rock and let one fly and see where the round hits.... if it's close I can move on to the paper but if it's off by more then a foot it's easy to see where the adjustment is needed and I will adjust and repeat until the rock is cracked or scared s h i t less...... :)
 
Since were in True North Arms business space, I'm going to go ahead and suggest you do some research on what they are selling.... and maybe start a thread of your own in the general forum areas as it's a good question! :)

My buddy has an arbor style that he likes, the chamber units like these for sale in this thread might not be as accurate as the arbor style but they should get you on paper at 25 yards pretty quick which is probably about as far as your going to see the red dot laser on a bright day.
 
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old303 said:
Very useful with semis and pumps and anything that isn't a bolt-action rifle where you can simply remove the bolt and visually boresight down the barrel, holding the rifle steady so you can compare what you see there with where the optic crosshairs sit. But honestly even that is a bit of a juggling act compared to simply steering the optic onto the red laser dot!
Click to expand...
I dont know man. Those Renegade rifles are a touch difficult to bore sight the classic way.
 
WilliamM said:
I dont know man. Those Renegade rifles are a touch difficult to bore sight the classic way.
Click to expand...
The Renegade is Special, being a straight-pull bolt based on using AR-15 parts, and you'd have to disassemble the stock and remove the bolt carrier and all to be able to see up the back of the barrel. A regular AR would have just popped open for boresighting! But far easier to grab one of these lasers.
 
I’ve tried a few different boresighters over the years but never really had much luck with them
They mostly never got me on paper but I was also using the cheaper ones you buy on e bay so that may have been a factor
I like wasting ammunition so meh lol
 
No offence to TNA, but I just start with a big piece of paper at 100 yds…..usually takes 1 shot for reference and a second shot to get within 1-2” of zero (assuming the scope is decent quality)
 
rickspeed said:
I have a Cabelas " In-Chamber " Laser bore sighting kit " Sleeve " verison. which works very well.
You purchase the laser boresighter in .223..... then choose/ purchase your "Sleeve" cailber which you need.
I have 3x sleeves,
* 300 win mag.
*30.06 (.270 & .25.06 )
* .243 ( .308 & 7mm.08 )
Click to expand...
Thanks for the suggestion, it will probably replace my cheap Chinese bore sight :p
 
With the price of ammo today, anything that helps accomplish the result with less wasted ammo is a good thing in my mind. I have a laser that different arbours go on and it slides in the muzzle and has worked perfectly for me. Bolts actions are the easy button for sight in!!
 
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