Live & Learn - Laser Bore Sighting NOT perfect

[KM1]

Ok....NOW I know why they say to use Laser Bore Sighting ONLY to get on paper....finalize and finish your ACTUAL zero (whatever you are choosing) AT THE RANGE with REAL ROUNDS.

Man....using a adjusted 25yd target for 100yd zero I spent a good deal of the afternoon trying to bore sight zero using laser cartridge on an Eotech, BUIS, and green laser sight. Not until toward the end did I realize that everytime you close the charging handle to secure the laser....the laser round DOES NOT sit perfect, thus, no matter how slow you let the charging handle onto the round the laser on it is NEVER in the same place.

If you zero a sight, then go back and adjust the charging handle, or go back and check it after removing and replacing the laser cartridge, the laser hits the target in a different place...EVERY TIME......NEVER exact. Heck....should have realized it as my Sight Mark Laser cartridge isn't even the same shape as a genuine round....and it is a .223/5.56 cartridge.

DUMB!!!

 

[Crews]

You don’t even need to be listening to the folks who are telling you to use a laser at all. Bore sighting is not difficult.

 

[jbonnie]

I have one of those lasers that goes in the muzzle and it sucked so bad trying to use it they way they say I just use it to help me bore sight by pointing it through the barrel. You can kind of center the dot and it does get you on paper right away when you get to the range. I tried one of those 9mm cartridge shaped lasers for a striker fired pistol and it was completely useless. How can they design something that is not even the correct shape?

 

[Powder_Burns]

This might sound crazy but you can bore sight an AR upper by just removing it from the lower and removing the bolt carrier group...I have yet to find a justified reason to buy or use a laser bore sight.
Can zero pretty much anything that goes bang in less than 5 rounds the old fashioned way.

 

[celltech]

I have one of the green lasers you put in the end of the barrel and it works great! I put heat shrink on the cone where it makes contact with the crown to prevent any scraping. Then using a rifle/scope combo I knew was accurate I adjusted the laser set screws to get it centered on the neighbors roof that is ~130 yards away. I am never more than 6" from my POA once I go to the range and try it for real. Pulling the bolt and aiming with the bore also works,, but I think the laser is better and is more accurate for me.

 

[oldfatguy]

I have one of the green lasers you put in the end of the barrel and it works great! I put heat shrink on the cone where it makes contact with the crown to prevent any scraping. Then using a rifle/scope combo I knew was accurate I adjusted the laser set screws to get it centered on the neighbors roof that is ~130 yards away. I am never more than 6" from my POA once I go to the range and try it for real. Pulling the bolt and aiming with the bore also works,, but I think the laser is better and is more accurate for me.

Leaving it in the end of the barrel makes for a very bad day.

OFG

 

[KM1]

I have one of those lasers that goes in the muzzle and it sucked so bad trying to use it they way they say I just use it to help me bore sight by pointing it through the barrel. You can kind of center the dot and it does get you on paper right away when you get to the range. I tried one of those 9mm cartridge shaped lasers for a striker fired pistol and it was completely useless. How can they design something that is not even the correct shape?

Totally AGREE....what a waist of time. Each time I closed the BCG even centring the charging handle, the lazer light would move up, down, left, or right from 1 to 3 inches. AND I didn't discover that until much later....after waistnig so much time thinking I'd at least be close. COMPLETELY USELESS!!!

I'd have been better off leaving the sights I was zeroing at factory default, going to the range, and using actual rounds from the get go.

 

[celltech]

Leaving it in the end of the barrel makes for a very bad day.

OFG

Don't worry...I always replace it with a cleaning rod when I am done...

 

[seanh]

This might sound crazy but you can bore sight an AR upper by just removing it from the lower and removing the bolt carrier group...I have yet to find a justified reason to buy or use a laser bore sight.
Can zero pretty much anything that goes bang in less than 5 rounds the old fashioned way.

That's exactly what I do / did... No longer have an AR. I did this at a range that I used to work at trying to help a guy get his AR zeroed... it took longer to take the upper off and get it aligned with the target than it did to get his gun zeroed... LOL

Gun owners response... So what you're telling me is, I spent a hundred bucks on a bore sighter for no f*uck'n reason.

I told him, no, not at all. If you have a lever action or something like a 10/22 they work very well....

And like most of us gun enthusiast, if I remember correctly he set out to get a lever action... LOL

 

[ToddM]

Yeah I've never trusted the bore sight cartridges that much, the ones that go into the end of the barrel can be pretty good, but unless I can't bore sight it, like on a 10/22 etc, I never use them, even then I avoid them and start closer with a tall dirt berm as I never want to put anything in the end of the barrel. Careful boresighting has always gotten me on paper at 100, and if it doesn't you can move up to 25 yards and if you're still not on paper you did something very very wrong

I know guys balk at using 25 yards but one of the fastest ways I've zero'd rifles is on ranges with tall 25 yard pistol dirt berms, usually 2-3 rounds spotted in the dirt and you can go to 100.

 

[Killswitch Engage]

this is painful to even read...

 

[Steve_In_29]

Got to range with live ammo. Use a BIG piece of cardboard at 10yds to see where it hits. Then adjust from there and move target out to your preferred zero distance to finalize.

 

[hypno02]

Spending money on any kind or bore sight is stupid. You’re much better off doing it manually and if that is not possible then you use the close target method.

With little practice you should be able to get onto a 20x20 target by looking down the bore. It’s really not that hard.

 

[seanh]

Got to range with live ammo. Use a BIG piece of cardboard at 10yds to see where it hits. Then adjust from there and move target out to your preferred zero distance to finalize.

Go straight to 200 yards, standard target and stop dicking with that short-range stuff... it saves unnecessary shots and much easier to calculate longer-range drop

 

[Steve_In_29]

Go straight to 200 yards, standard target and stop dicking with that short-range stuff... it saves unnecessary shots and much easier to calculate longer-range drop

200yds is all well and good IF you know the rifle is pretty close to on already.

If you have no idea than you fire a couple rounds at close range just in case your sights are WAY off. You are going to need a MUCH larger target at 200yds than at 10 or you will waste ammo trying to spot off target misses.