The cheap laser job ($39.99?) sold at Walmart has a better adjustable arbor system than some very expensive types . I bore sight all my center fires with it at 25 yards and head to the range knowing I am within a couple clicks of my 1.75 to 2" high at 100 yards preference .
I asked the same question here a month or so ago, and I finally bought the Site-Lite SL-100. It turned out to be a good investment and I have been very pleased with its performance. It works with handguns, rifles, muzzleloaders, and can be adapted for shotguns. I suggest you shop around since the price of these units varies quite a bit.
boresighter
Linear Mode
