bore sighting rifle

"PartyPooper2012" (PartyPooper2012) 09/24/2018 at 08:53 • Filed to: None

0

16

I went to a range this weekend. Tried shooting my rifle. Discovered the scope actually came loose. Had a range office help me remove the scope, tighten the rail and mount the scope back on.

Since I don’t know much about sighting in a scope yet, I asked him to help me bore sight it and then zero it in.

What came next was rather interesting and I am trying to find more information on this.

When he was bore sighting in the rifle, he used a left hand method. Make a fist with left hand with thumb sticking out. I think what he was saying is that if you want to move left for instance, you follow your fingers and tighten the windage turret counterclockwise if you are looking at it.

Then once he got it bore s ighted, he used the right hand method to zero the rifle in.

What I am trying to find out why left hand vs right hand rule? He says there is an optical illusion, but I am not quite sure how it all works.

Anyone use this method?

As a side note, this guy knew exactly what he was doing. I was at 100 yards and hit bulls eye in 2 shots.

I will go next weekend and pick his brain some more but I wanted to get more info on this left hand vs right hand method and on the optical illusion thing.

After all, if I am out hunting zombies and my scope comes loose, I need to be able to do this without bore sighting lasers once i fix the scope issue. 

PartyPooper2012 > PartyPooper2012 09/24/2018 at 09:10

0

Found this which I think is the same method. But I am trying to understand why

NOTE: If the object seen through the bore appears low, and left of the cross hair you’ll adjust the scope with the “up” adjustment and the “right” adjustment. If the object seen through the bore is high and right of the cross hair you’ll adjust the scope with the “down” and “left” adjustment.

Hamtractor > PartyPooper2012 09/24/2018 at 09:21

1

I’ve never bore sighted any of my rifles, I always just start with a target at 25 yards or so, fire off a couple rounds to see how far off I am, and work in from there. That’s the simple, no trick way. Thousands of rounds from 100 to 800 yards maintaining 1-1.5 MOA and I always get there via this method. But I like the process of getting a rifle tuned up and on target, so this method is fun for me, lol... A boresighting tool/tric k would be easier though...

RamblinRover Luxury-Yacht > PartyPooper2012 09/24/2018 at 09:27

0

Sounds like the kind of thing I’d have to see to understand. Not that I have any experience to speak of with adjusting scopes . My younger brother has a Savage that he put a scope on recently, but the important first step there was actually getting the base adjusted right.

PartyPooper2012 > RamblinRover Luxury-Yacht 09/24/2018 at 09:29

0

Funny. I shot savage. Bro?

RamblinRover Luxury-Yacht > PartyPooper2012 09/24/2018 at 09:43

0

I don’t recall offhand much about his rifle, other than it being chambered in .308, polymer stock, and... oh, lefthand bolt, because he’s a lefty. Also, he has a bipod and other toys.

Recently, he and I ordered the World’s Silliest Gun (Circuit Judge Tactical) because another brother has a birthday coming up. I may post a review (?) when it comes within reach.

My own collection so far seems to be all shotties. A turn of the century Remington double, a Browning Auto 5 from the 20s, a single-shot Iver also from the 20s, a turn of the century hardware store coach gun with twist steel barrels , and a fluid steel single (Iver’s poor cousin).

PartyPooper2012 > RamblinRover Luxury-Yacht 09/24/2018 at 09:48

0

Yep. I shoot .308 but a righty. Bipod on the front. Monopod on the rear.

It’s a lovely rifle and packs a punch. Paper has no chance. 

Highlander-Datsuns are Forever > PartyPooper2012 09/24/2018 at 10:13

1

This is one of those things  you don’t question, just be glad you got the yoda of bore sighting guys.

PartyPooper2012 > Highlander-Datsuns are Forever 09/24/2018 at 10:30

0

I want the yoda skill tho. I want to know what he was doing. I am going to pick his brain next weekend. I will know everything he knows and more. 

BigBlock440 > PartyPooper2012 09/24/2018 at 10:40

0

Oh, so what you’re saying is that with the initial bore sighting, you were high/low, than when you were shooting, you were the opposite?  That makes sense, but I’m not sure the optical illusion part, unless that’s just a thing with bore sights and they’ll skew to one direction.  

PartyPooper2012 > BigBlock440 09/24/2018 at 11:09

0

no. Guy was bore sighting my rifle. with bolt out, he was using the left hand rule which basically spun turrets clockwise (lets say) to raise the bullet. But once the bolt was in and to adjust the cross hair when zeroing, he was using the right hand method which basically spun the turrets counterclock wise to raise the bullet.

It’s hard to explain because I didn’t understand it, but all I got out of it is that you spin turrets counterintuitive for boresighting and intuitive when zeroing. 

Highlander-Datsuns are Forever > PartyPooper2012 09/24/2018 at 11:20

0

Whoever bore sighted my rifle had similar skills. They just handed it over and I was hitting 2 " groups on target at 150 yards.

PartyPooper2012 > Highlander-Datsuns are Forever 09/24/2018 at 11:29

0

Damn! I am jealous of those skills. I need them. I will acquire them. 

Highlander-Datsuns are Forever > PartyPooper2012 09/24/2018 at 11:53

0

I always sight in/shoot to kill in the pron position. I’ll only stand if it’s less than 100 yards. Archery I’m good to 20 yards but that’s another thing altogether. I think my archery has improved my shooting, especially the breathing and relaxing.

PartyPooper2012 > Highlander-Datsuns are Forever 09/24/2018 at 12:25

1

only thing I am killing is mosquitoes on the range. I would like to get my breathing under control, but being unable to shoot straight with a loose scope was a bit more frustrating than getting my breathing right.

Now that I know which way is up, I can start working on more important things. Position, breathing, grip.

Place where I bought the rifle and scope mounted it for me. I assumed it was in good shape. Assume.... you know how that goes. 

You can tell a Finn but you can't tell him much > PartyPooper2012 09/24/2018 at 15:53

0

What I am trying to find out why left hand vs right hand rule? He says there is an optical illusion, but I am not quite sure how it all works.

It’s not an optical illusion, it is simply the mechanics of how adjustments are made at the scope . The adjustments written on the scope are how the point of impact moves when you make an adjustment. When you are bore sighting a rifle you are adjusting the point of aim of the scope to match what the barrel is pointing at.

Think of the scope and the rifle as being two tubes, and assume that the scope and rifle are exactly parallel when you mount the scope . If you’ve got the rifle fixed in a vise so that the barrel is centered on the target, and the scope is precisely parallel to the rifle your reticle will be aimed a short distance above what is centered in the rifle bore. W hich way do you move the reticle   so that the scope is also centered on the target? You have to adjust the reticle (point of aim) down in the scope which has the same effect as moving the bullet up (point of impact). If you put your rifle in a vise so that it is fixed and adjust the scope while looking through it you can see that relationship. When you adjust the scope “up”, the reticle actually moves down in the scope.

The reticle adjustments have the same relationship when it comes to moving point of impact left and right. To move the point of impact left, the reticle will actually move to the right within the scope.

Hopefully those ramblings make some amount of sense.

PartyPooper2012 > You can tell a Finn but you can't tell him much 09/25/2018 at 06:54

0

sorta... come over here and show me. I observe and retain better than read and understand