The laser has little adapters for different calibers. You screw the adapter into the laser and slide it in the end of the barrel, turn on the laser, and adjust your sights to coincide with the bright dot on the far wall. Simple, right?
I did not seem to have enough adjustment range my scope. Or in my iron sights, which are not far off. My son is not an experienced shooter and he was able to hit the 100 yard plate with iron sights st the range.
It works fine in my Remington Model 660, and the scope is adequately aligned. My M1A, no. The flash hider is too long for the adapter to reach the muzzle.
I considered removing the flash hider but that requires a castle nut wrench. I have lots of weird tools (a huge die wrench, 4' long tweezers) but not one of those.
It is a clever design that accommodates 32 different calibers. The laser is bright. I do not know if it would useful outdoors, but inside my house it is adequate.
I have ordered a chamber bore sighter, the kind that goes in the chamber. Reviews on Amazon are generally positive. It has no on,/off switch so get your coarse alignment done quickly.
I may machine an extension to allow the adapter to reach the barrel. This is not so hard to do. Maybe. It needs a screw that goes into the laser extension and a way to attach the adapter which uses a tiny little screw. The extension on which the adapter sits is continuous with the laser so it is going to need to be a tight fit to be useful.
UPDATE: I was putting rifle back in safe, a .308 chamber bore sighter fell out!
UPDATE 2: Once I figured out battery direction, it was painless. Whatever fiddling I did on the scope while discovering the CV Life bore sighter was loose in the muzzle, I was fractions of an inch from the red dot. I should be close enough to hit paper at 100 yards.
I got one of those sighters recently. Not having a 100 yard target, I set my rifle on a bipod and set up the gridded reflective target at the other end of the hall. I then adjusted the reticle to 1" above the dot. That should get me close. On the dot at 20' would be way too low.
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