I basically meant stick with a descent brand.Let me do some looking around and I'll get back to you.I don't use them myself,but I have used them in the past.I typically shoot from the bench at 25 yards first and work my way out from there,it's usually always on the paper at 25,but I use a 2'x4' piece of plywood to hang target' on,so It's never off of that.I don't care for the grid type boresighting devices,but that's just me maybe.the laser boresighters are more reliably consistant,after all the principles are sound.If the laser is looking out of the bore concentrically it should therefore give a perfect(or near) line of sight to the target.If you use this this type of device to zero/boresight at 100 yards or beyond,this would be zeroing at the second point the bullet crosses your line of sight...or on the down slope of the bullet path or trajectory.If you can use a gunvise to hold the rifle while your boresighting,and use a crosshair leveling device to keep your crosshairs completely vertical to the axis of the bore when mounting the scope,your going to get very close to your intended impact point when you actually shoot the weapon.
That would suck!
