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Can I adjust fixed sights?
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Sounds like a stupid question,but bear with me.Piece is a Win. model 94 30-30 with dovetail front sight and factory thumb-adjuster-in-the-slot rear sight.(You know what I mean.)It shoots OK groups but they are 10 inches right of point of aim at 100 yds. Can I move that front sight(or the rear) to adjust the windage,or should I replace both sights with adjustables? I think if one of them is punched in the right direction a little bit I'd be in business,( with some trial and error)I really would like to try moving them before buying new adjustables!Also,I am not very good at gunsmithing.I tried moving that front sight with a ballpean hammer and a wood dowel.That didn't work.I stopped before I dinged or broke something.(You can stop laughing here)This should give you an idea of my gunsmithing knowledge.How do I get that sight to move?And when I do move it,
how do I lock it back in place? Go ahead,Flame me, I can take it, but my questions are sincere.Also,if I decide to get new sights how do I remove and install the rear sight?
 
Posts: 147 | Location: Green Co.,Wis | Registered: 07 September 2004Reply With Quote
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That isn't exactly umm...helpful.I would like try to do this myself.It seems pretty straight forward.However,there are obviously a few tricks involved that I should know before proceeding.Care to enlighten me?
 
Posts: 147 | Location: Green Co.,Wis | Registered: 07 September 2004Reply With Quote
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Just tap the rear sight a little to the right Big Grin left and try it. Use a soft brass punch and a light hammer with the barrel supported in a vise or on a wooden bench. Keep in mind that .001" equals 1.00" at 100 yards so go easy on it. It sounds like the dovetail is plenty tight so I don't think you need to worry about it falling out. If it does, it's not the end of the world. It's pretty easy to tighten up dovetails. If you get to that point I'll explain how it's done


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Posts: 2949 | Location: Corrales, NM, USA | Registered: 07 February 2001Reply With Quote
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If my thought process is working properly,the rear sight is moved to the left to get point of impact to move left.
 
Posts: 147 | Location: Green Co.,Wis | Registered: 07 September 2004Reply With Quote
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Originally posted by prplbkrr:
If my thought process is working properly,the rear sight is moved to the left to get point of impact to move left.


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Posts: 2362 | Location: KENAI, ALASKA | Registered: 10 November 2001Reply With Quote
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purple

You are correct. I typed an answer that corrected John but pushed the wrong button and deleted it. Frowner

Use a padded vise. Get a small hammer and a nylon or brass punch. I'd move both sights a little rather than moving one a lot. Drift the front sight to the right and the rear sight to the left. Just a little bit each. Then shoot a few shots and you will be able to tell if you need to go more (or less). You don't even need to shoot at 100 yards. 50 yards, or maybe even 25 will tell you.

An iron sighted rifle can be sighted in at 12 1/2 yards. Dead center at that yardage will put you pretty good all the way out to 150 +/-. But you need to verify at the longer distance.

Good Luck

Ray


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Posts: 1560 | Location: Arizona Mountains | Registered: 11 October 2004Reply With Quote
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The amount you need to move the sight is easily calculated by taking the ratio of distance between the sights and the target. Meaning that a 12"sight radius would have a 900 to one ratio for 100 yards. This is where a micrometer helps in the process.

I would see if the front sight was centered before moving the rear, but either will give the adjustment you need.






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Posts: 3611 | Location: LV NV | Registered: 22 October 2002Reply With Quote
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SAKO

Actually, 12" between sights is 300 to one ratio at 100 yards.

100 yards = 3600 inches.

3600/12 = 300

So, 10" at 100 yards means the sights will have to be moved 3/100+ of an inch.

Ray


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Posts: 1560 | Location: Arizona Mountains | Registered: 11 October 2004Reply With Quote
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OK.I'll have to get a proper punch.I was concerned that the sights may have been glued/soldered/chemically attached to the barrel.Am I correct assuming that friction alone is at work here? Seems that it is based on your replys.First thing in the morning I'm getting a punch.
 
Posts: 147 | Location: Green Co.,Wis | Registered: 07 September 2004Reply With Quote
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purple

The sights were made to be pushed in and held by friction. BUT, there no guarantee that someone did not put a drop of super glue on them or that a 50 year accumulation of dried oil has not turned to glue. That's why you need a padded vise. Put the part of the barrel that's directly under the sight in the vise.

Good Luck

Ray


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Posts: 1560 | Location: Arizona Mountains | Registered: 11 October 2004Reply With Quote
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I measured the distance between the sights.16 5/8 inches.How will this corelate to how far to move the sights.Not that it will help me as I don't have the necessary measuring tools.I'll have to do the hit or miss method.(pun intended)I am simply curious.
 
Posts: 147 | Location: Green Co.,Wis | Registered: 07 September 2004Reply With Quote
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100 yards times 36" divided by 16.625 " is 216 times....meaning it's 216 times the distance to the target as between your sights.....so:

10" (the distance you're off) divided by 216 is=.046 or almost exactly a millimeter....
so...you can move your front sight to the right .046" or the rear sight .046" to the left or half and half...it's up to you.....actually it's a lot of moving....

1/32" is .031 for reference....you need to go a bit farther than that


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Posts: 28849 | Location: western Nebraska | Registered: 27 May 2003Reply With Quote
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purple

My dad would have said, "For crying-out-loud, just hold 10" to the left!"

Ray


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Posts: 1560 | Location: Arizona Mountains | Registered: 11 October 2004Reply With Quote
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Yea,I did the "shoot 10" left"thing.Trouble was it should have been 5" 'cause the deer was only 50 yds and I gut shot him,4 times! What a stinky mess that was!!That is why I want this problem fixed.In the heat of the moment, my brain sometimes gets tunnel vision.You know,deer is at X distance,gun shoots 10" right at 100yds(or is left?)Damn is he big.Now let's see,is that 75 yds or 125? Oh hell, BANG. You get the idea.Really need to fix this.
 
Posts: 147 | Location: Green Co.,Wis | Registered: 07 September 2004Reply With Quote
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Originally posted by prplbkrr:
Yea,I did the "shoot 10" left"thing.Trouble was it should have been 5" 'cause the deer was only 50 yds and I gut shot him,4 times! What a stinky mess that was!!That is why I want this problem fixed.In the heat of the moment, my brain sometimes gets tunnel vision.You know,deer is at X distance,gun shoots 10" right at 100yds(or is left?)Damn is he big.Now let's see,is that 75 yds or 125? Oh hell, BANG. You get the idea.Really need to fix this.


Purple,
Take a good look at your front sight to see if it is canted. Winchester once had a tooling problem and put a bunch on rotated to the left so the rifle shot to the right. I got a used M94 Bigbore 375 like that. The previous user had installed a receiver sight to get it sighted in.
 
Posts: 478 | Registered: 21 October 2008Reply With Quote
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Originally posted by Cheechako:
SAKO

Actually, 12" between sights is 300 to one ratio at 100 yards.

100 yards = 3600 inches.

3600/12 = 300

So, 10" at 100 yards means the sights will have to be moved 3/100+ of an inch.

Ray



Yes, I must have been in the Hoppes bottle again.... so sorry.






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Posts: 3611 | Location: LV NV | Registered: 22 October 2002Reply With Quote
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Imagine placing a long dowel on top of your sights. If you move the rear sight to the right, the end of the dowel, which is your line of sight, moves to the left. Therefore, you move your gun to the right to put the line of sight back on target. Moving the rear sight to the right moves the POI to the right.

The distance you move the sight to the right will equal the distance the bullet impact moves to the right, multiplied by the range, measured in terms of sight radius. SO, if the sight radius is 6", and the target is 10' (or 20 sight radii) away, if you move the sight 1/10", then: 1/10 X 20 sight radii = 2" (the total distance the impact is moved at a 10' range.
 
Posts: 167 | Location: Kamloops British Columbia Canada | Registered: 19 January 2006Reply With Quote
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