Armory Sponsor
Posted: 12/11/2011 7:41:02 PM EDT
|
someone got this for Christmas for me last year a BSA bore sight kit that puts the metal rod in the muzzle and you look through the scope at a faux sight in target what a useless POS I put several scopes on AR platforms this year and it was of no use at they were mounted too high for the bore sighter to work then when I finally get to use it on my new Savage Model 10 PC, it proved to be inacurate I followed the directions and it looked like it was going to be good at 100 yards went out to shoot and started at 100 and was not on paper, went to 50, not on paper my son who was spotting was puzzled as well. oh, well, I went to 25 yards and saw the dirt kick up way high and left over the back stop so, I took the bolt out and lined the sight picture through the barrel up to the scope that way. went back to 100 and I was 2.5 MOA  within 3 more shots, I was grouping well so, what gives with bore sighters? is this one just cheap? what about the laser ones, do they work? |
|
1) Being BSA the quality is suspect.
2) They call it "bore sighting" for a reason , the way you did it is the best bet at my club we use what we call the "hubcap" method. Toss a medium sized opject out on the 100yd backstop (we used hubcaps for many years) Shoot at hubcap and have observer call the shot,adjust the optic or iron sight,repeat Two or three adjustments should get you "on paper" |
|
Bore sighters have their place and are meant to get you on the paper only in the first shot. They are good for firearms that you can't see down the bore from the rear without some serious disassemble. I don't own one as I've not had the need for one though I've mounted many scopes for myself and others. All's I do is disassemble enough of the gun, say remove the bolt from a bolt action, lock the gun into my gun vice (Tipton best gun vice), put a small highly visible object like a day glow golf ball out in the yard (about 250' out), look from the rear into the bore and through the barrel, and position the ball dead center by moving the vice, l,r,u or down (it's on a mobile table so that helps). Sorry for the run on sentence. Once the ball is dead center, I can adjust the scope to get the same picture as through the bore. Hence, bore sighting. You could do the same with your AR.
EDTA: Just thought I'd add this. For your first adjustment at the range, I take the gun vice with me and a shooting rest. I take a shot using the bench rest. I then lock the gun into the vice and positon the crosshairs on the first shot hole in the paper. From there I readjust the scope to put it center in the bull without moving the vice. If anything, I'll just need or for whomever, tiny adjustments to finalize it. I'm usually done with it all in 5 shots, not counting any foulers if needed. |
| I used to do OK with my Bushnell boresighter kit, you have to learn how to use one to have any luck with it. For quite awhile now I've used the lasers (muzzle type) and do my sighting at 25 feet. This works well for all calibers as trajectories vary so much - your bullet doesn't travel in a straight line out to the 100 yard or whatever range, it is an arc. You still have to know how to use one, you've got to measure your scope height above the bore etc.. A few times when I've gone to use my laser and the batteries were dead, I'd just do the "look thru the bore" sighting with ones that you can look thru and get the job done too. Whatever works for you is the best ... |
Armory Sponsor