Any using one you chamber like a loaded round? Would appreciate any insight you can provide into how well they work? Battery life? etc.

they work OK, but the red laser just isn't really to visible. works at 50 ft, but not much beyond

DB

Are you looking at using it on a gun where you
are putting on a new scope ?

I have found looking down the barrel and
picking a point on a fence then putting
the scope on as good as any.

I didn't find the couple of times I used
a cartridge one that useful.

If I was going to use a device, I'd use
the one where spigots go in the barrel
and you have a check pattern viewable
on the device.

For a bolt or a single-shot rifle where you can see through the bore and scope simultaneously, actual boresighting is much more accurate than either the laser cartridge or the spud types.

The accuracy of the laser cartridge depends largely on how well it fits your chamber, thus how parallel it is to the bore -- which means typically not very. Whereas I never have a problem getting a rifle "on the paper" at 50 yards with actual (physical) bore sighting, I would advise moving the "paper" up to 20 yards or so for the trial shot when using a laser sighter. But if you're going to put the target that close, why bother with the formality of bore sighting at all? Just shoot. It will be close enough to know which way to move the reticle.

"Whereas I never have a problem getting a rifle "on the paper" at 50 yards with actual (physical) bore sighting, "

+ 1

And after you have done a few, making sure you line up the bore with the scope as opposed to "slap bang", you are generally more than "on the paper" band in a 10" circle.

I've been mounting scopes on my rifles for a little more than 50 year's (I'm not as old as Ray but I do remember the celebration of V-J day) and bore-sighting them much as you all have described.

But if there is an easier or quicker I'm not adverse to trying it.

+1

quote:

Originally posted by Stonecreek:
For a bolt or a single-shot rifle where you can see through the bore and scope simultaneously, actual boresighting is much more accurate than either the laser cartridge or the spud types.

The accuracy of the laser cartridge depends largely on how well it fits your chamber, thus how parallel it is to the bore -- which means typically not very. Whereas I never have a problem getting a rifle "on the paper" at 50 yards with actual (physical) bore sighting, I would advise moving the "paper" up to 20 yards or so for the trial shot when using a laser sighter. But if you're going to put the target that close, why bother with the formality of bore sighting at all? Just shoot. It will be close enough to know which way to move the reticle.

Those laser cartridges could have some use with lever actions etc but I don't see the point of them for bolt actions unless there's no power pole beyond your back fence.

When mounting a scope on my son's pump-action 35 Whelen, I broke a cracked mirror to get a sliver, taped one end for a handle and angled the other end into the ejection port.

The picture is mirror image, of course, but once you have the target exactly in the middle, the rifle is bore sighted.

What's been said by others covers my thoughts on actually zeroing in, but there is one thing I've seen it used for that nobody talks about. Rechecking.

I knew a guy who would set his up to be at whatever height at x number of yards, then put it in the rifle case. When he'd get where we were going he'd put it in and look to see if he had banged the scope on anything. No shooting in his hunting area until it was time.

This was driven by a bad experience years before, and before the little laser was available he'd pull the bolt and prop the rifle up to "boresight" something at about 35 yards. The laser was quicker, but I don't think any more accurate.

It bugged him I didn't want to check mine, but I've never had one break in transit. The only time I've worried about it was when flying.

Yeah, BigNate, in this age of moving erector tubes, you could have something there, if the laser cartridge always points to the same spot and does not vary depending which way the headstamp faces.

I bought the cartridge laser type bore sighter and was very disappointed.I have a old Bushnell that works better and best is the old look down the bore and adjust your scope.