M14 Forum

starman · February 11th, 2012, 02:22 PM

In addition to my M1A, I also have a SKS (7.62 x 39) and a Mosin Nagant (7.62 x 54). If I purchase a Laser Cartridge Bore Sight that will fit my SKS, it will fit my M1A, but will the accuracy be significantly affected in my M1A?

Thanks for your help!

Young guns · February 11th, 2012, 04:54 PM

Yes the accuracy of the first zeroing with the laser will be bad cause the casing size is different and wont fit propperly in the chamber of your M1A. I personaly dont use a bore sighter, i do it the old fashion way and i have a whole lot better results.
Good Shooting.

DukeRustfield · February 11th, 2012, 05:05 PM

If enough people say the laser sight was a godsend, I'd buy one in a heartbeat. But I simply haven't heard that. I don't know if the technology isn't there or what the issue is. Maybe a bullet isn't a laser?

Lazerus2000 · February 11th, 2012, 05:29 PM

I've got one in .308 Win. Because I am always swapping around MOUNTS AND SCOPES AND RED DOTS, I thought it would be a help setting up for on paper zero faster, and save $$ on sighting in ammo.

But the laser was no faster for me than the old fashioned way

DarkStaR · February 11th, 2012, 05:44 PM

FWIW: My very first rifle, the (SAI) M1A I currently own; I put a scope on it before firing it, and I was able to put the very first shot on paper @ 100 yds with the use of a bore laser. YMMV

oldflyboy · February 11th, 2012, 06:37 PM

Quote:

Originally Posted by DukeRustfield

If enough people say the laser sight was a godsend, I'd buy one in a heartbeat. But I simply haven't heard that. I don't know if the technology isn't there or what the issue is. Maybe a bullet isn't a laser?

I used a laser cartridge when I put a scope on my second rifle. I adjusted the scope so that the red dot appeared about 2" under the crosshairs ...100 feet, at night in my back yard. 2" was a guess, I wanted the bore and scope aiming parallel to one another. I probably should have put the dot just over the crosshairs.
I skipped the 25 yd adjustment step that I used with the first rifle. My first shot was off target, but on the paper(6" low and 3" left) on our 100 yd range.
Not a godsend, just another tool.

DarkStaR · February 11th, 2012, 07:10 PM

Quote:

Originally Posted by DarkStaR

FWIW: My very first rifle, the (SAI) M1A I currently own; I put a scope on it before firing it, and I was able to put the very first shot on paper @ 100 yds with the use of a bore laser. YMMV

Quote:

Originally Posted by oldflyboy

I used a laser cartridge when I put a scope on my second rifle. I adjusted the scope so that the red dot appeared about 2" under the crosshairs ...100 feet, at night in my back yard. 2" was a guess, I wanted the bore and scope aiming parallel to one another. I probably should have put the dot just over the crosshairs.
I skipped the 25 yd adjustment step that I used with the first rifle. My first shot was off target, but on the paper(6" low and 3" left) on our 100 yd range.
Not a godsend, just another tool.

On the crosshairs @ 100yds, mine was about 6-8" left, but elevation was good with WWB NATO ammo...6-8 low if used with FGMM ammo.

Reaper6 · February 11th, 2012, 07:37 PM

At work I've used the PEM-1 laser bore sight system to zero my PEQ-2 IR sight to my M4, worked good enough that I was dropping targets at 250m at night using NVGs.

At home I use a cartridge type laser bore sight. I use it for irons and scopes, but I don't expect to achieve a zero with it. The bore sight just ensures you're on the paper, I've had good results and I'm usually within 3" of POA.

starman · February 12th, 2012, 05:56 AM

Thanks for all of your replies. I think I will skip the Laser Cartridge Bore Sigh, as I wanted it to zero my rifle, and just stick with manual method at 25 yards. The old method worked in the past when I was in Army basic training in the mid 60s. I thought the Laser would speed things up, but it doesn’t look that way.

dozier · February 12th, 2012, 08:26 AM

Quote:

Originally Posted by Reaper6

At work I've used the PEM-1 laser bore sight system to zero my PEQ-2 IR sight to my M4, worked good enough that I was dropping targets at 250m at night using NVGs.

At home I use a cartridge type laser bore sight. I use it for irons and scopes, but I don't expect to achieve a zero with it. The bore sight just ensures you're on the paper, I've had good results and I'm usually within 3" of POA.

Careful leveling/good rings/mounts also assures you will be close(on paper), prior to actually going to the range. Start out at 50yds, or less and save some ammo. dozier

mercman · February 12th, 2012, 08:46 AM

I've been using one for about five years and it works but I still start my first shots at the 25 yard line. Mine really eats batteries, which are not cheap. When I sight in with the boresighter I do it between my basement and garage which is about 30'.

M1AallTheWay · February 12th, 2012, 09:52 AM

Quote:

Originally Posted by Lazerus2000

I've got one in .308 Win. Because I am always swapping around MOUNTS AND SCOPES AND RED DOTS, I thought it would be a help setting up for on paper zero faster, and save $$ on sighting in ammo.

But the laser was no faster for me than the old fashioned way

You might get better results if you used the already zeroed scope you're going to replace to determine where the laser is actually pointing, record the difference, then use that difference to determine where the new sight's zeroed aimpoint should be relative to the laser.

I use an AimShot chamber laser with a .308 arbor, and I've found that rotating it to different positions inside the chamber moves the laser slightly. Marking which "side" of the arbor should be up can help consistency.

2336USMC · February 12th, 2012, 01:32 PM

In a rifle with a spring loaded ejector, the chamber laser will be pushed out to the right by several MOA.

As long as you account for that, and setup your sights/scope several MOA to the left of the laser dot to start, you will be on paper and save a few rounds of ammo.

RandyB45 · February 12th, 2012, 01:36 PM

The one DOD uses is a great device for boresighting, esp. rail mounted goodies such as lasers, thermal sights, etc. Not great for iron sights, scopes. Better to shoot them in and use that laser to verify, as M1 said.

It's also $700…. Sorry I can't remember the nomenclature: It's amazing what you forget when you retire.

DukeRustfield · February 12th, 2012, 02:00 PM

OH, lasers are unbelievable power-consumers. One of the least efficient uses of electricity possible short of sticking a wire from + to - and watching it get hot. It's why you almost never hear of any power-generation (or much in the way of weapons) utilizing lasers. The only theoretical one using lasers is trying to get fusion...but good luck on that.

They are getting better at some chemical lasers, but those are huge. I met some guys who worked on that anti-ballistic missile laser and the chemical housing had to sit in a Boeing 747 it was so big. Not efficient for boresighting I'd imagine.