Leupold Zero Point magnetic Illum. Boresighter

I was reading about the Leupold Zero Point boresighter. Does anyone own one of these devices?
Are they as "good" as what's been said?
Supposedly this boresighter will get you darn close to zero without firing a shot!

What's your opinions on this?
Thanks for your input.

:huh_small

I have one and have used it on many guns, probably 6-7 years now.

It only works on guns with muzzle faces that are steel (not aluminum 22 cal brakes). Also if the muzzle face is not perpendicular to the bore the zero will be off. If you have a threaded muzzle a lot of time it will skew this device.

Also does not work well on Shotguns with removable or extended chokes.

It is good for regular flat muzzle rifles.

I also have a laser bore site for the rifles/shotguns the magnetic one does not work on.

Thanks Postban, I appreciate the input! I will check the barrels of my rifles with a square.
Have a great one!