laser bore sighter
- Thread starter Light Infantry
- Start date
The laser bore sighter that I use, aligns on the last 4" of the bore and is quite accurate - I still have to "fine tune", but it gets really close - within 1" at 10 yards. It also has all the fittings to go from .22 to .50 cal. I've never used the cartridge type bore sighter, so I can't offer an opinion on it, but you would have to buy one for each calibre. I believe that some of these Chinese companies have the ability to make accurate stuff, but do they have the motivation ? Kinda' - hit and miss - no pun intended. If it's not expensive, it may be worth a shot.
Not being really familiar with using bore sighters, is this ok? Any problems or issues? Pretty cheap coming out of China.
Any opinions?
?
Going to depend on whether they are sticking a dollar store laser pointer into a cartridge shaped casing or if they are actually taking the time to align the beam so it points straight down the bore no matter the position it is in the chamber.
Cheap lasers tend to use really cheap lenses, and while the laser beam itself may travel in a straight line for about ever, it is not always aligned with the axis of the laser pointer. Some years ago a friend thought he was on to the 'next great thing' with using some fairly expensive laser pointers as source for building just this sort of thing, before you could buy the stuff at the flea markets for a buck a dozen. None of the pointers were even a little bit close to being aligned when they were spun in the lathe. The beam was anywhere from a half CM to several CM out of alignment at a couple feet out from the chuck.
Honestly, don't spend more than you can afford to see burn.
I have a magnet mount Bushnell unit, and it works for about any caliber. YMMV.
I was given a set of those when they first came out.
They're OK but don't expect miracles from them.
They will get you onto an 8x10 sheet of paper at 25 meters.
Depending on how sloppy they are in your chamber and how well aligned the laser within the insert is, will determine accuracy.
I found that a bit of tape around the insert helped to keep it aligned with the axis of the bore.
I gave those insert away to someone that really likes gadgets. I find it just as quick to use my eyeball to bore sight/adjust the scope to get it to where I can fine tune it at the range.
If you aren't going to do a lot of work with them, they aren't worth the money and can give you misleading information. They only give you an approximation of where your point of impact will be in relation to the reticle of your scope.
They're OK but don't expect miracles from them.
They will get you onto an 8x10 sheet of paper at 25 meters.
Depending on how sloppy they are in your chamber and how well aligned the laser within the insert is, will determine accuracy.
I found that a bit of tape around the insert helped to keep it aligned with the axis of the bore.
I gave those insert away to someone that really likes gadgets. I find it just as quick to use my eyeball to bore sight/adjust the scope to get it to where I can fine tune it at the range.
If you aren't going to do a lot of work with them, they aren't worth the money and can give you misleading information. They only give you an approximation of where your point of impact will be in relation to the reticle of your scope.
Slipnslide
CGN Regular
- Location
- Ontario, Canada
I bought one of the cheap ones off of True North Arms (like 15 bucks i think, maybe 10) and its garbage. Not even close to centre when you rotate it in the chamber. Money would have been better spent on the ammo i used to sight it in the old fashioned way.
- Location
- Blaster land, Okanagan BC
I use a Bushnell one that slides into the barrel at the muzzle, it works as well as a laser bore sighter can work. It’s only good for getting you on paper around 20-25y, you have to fine tune it for whatever distance you want your final zero to be at anyway.
Two minutes with a bread knife and a cardboard box can get you on paper at short ranges. Cut a set of vee notches to sit the rifle in, sight down the bore. Use a small mirror if you gotta.
As far as I see it, the real benefit of the various bore sighter tools is to be able to check and confirm that either no settings have changed, or that zeros actually returned to zero, without having to fire a test shot or group.
As far as I see it, the real benefit of the various bore sighter tools is to be able to check and confirm that either no settings have changed, or that zeros actually returned to zero, without having to fire a test shot or group.
My dad bought a high end set 223 and 300wm. With the crosshairs on the dot at 100yards he would have missed my truck parked broadside. Way to many variables to use a bore sighter from the chamber. You could bend the barrel and itll still say your own
brybenn said:
So true! Why would anyone waste time and ammo fooling around with something that, if to begin with, does not fit perfectly in the chamber, cannot possibly work?
I bore sight mine looking out the front window.
The scope is adjusted until both it and the bore of the rifle are both on the bottom of a post that is about thirty yards away. Head to the range, and have never missed being to within a couple of inches of point of aim at 25 yards with first shot. Not once!
Adjust to correct to hit dead centre, and fire second shot at 25. Usually prints either touching or inside half-inch square of black tape.
Adjust to make correction to dead centre, and fire next shot at 100 or 200 yards.
Make final adjustment for desired POA at that distance, and shoot two more to prove sighting. Five shots, and sighted in.
Black tape is cheap, and those five shots are the best bet you can make on a sure thing.
Ted
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I use these to verify my zero .. after going to the range and accurate sighting of my rifle I take it home, measure 10!paces from a sheet of paper with a small black dot on it, put in the laser, site onto the paper at the black dot, and mark with a red marker where the red dot shows on the paper, label the paper with the rifle, load , and distance from the paper.. then if I’m out hunting and take a hard fall, or bump my rifle, I can quickly test to see if it’s lost it’s zero by walking the ten paces from the paper and verifying the red dot. Saves ammo and gives confidence without shooting during the season, on or near hunting lands!
