Smarter Way to Lower POI?This is a discussion on Smarter Way to Lower POI? within the Gunsmithing forums, part of the Firearm Forum category; My .44 OM Flattop was still printing high while the rear sight was all the way down, using a 240 grain lead bullet moving at ...  |
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August 23rd, 2012, 10:55 PM
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#1 |
Join Date: Aug 2010 Location: Tahuya WA.
Posts: 1,005
| Smarter Way to Lower POI?
My .44 OM Flattop was still printing high while the rear sight was all the way down, using a 240 grain lead bullet moving at a snails pace.
I pretty much expected that, but it did the same thing with a 240 grain jacketed bullet, going much faster.
So the only way I figured I could get the POI down, was to remove and file down the rear sight blade itself.
I worked, but was there another...smarter way?
Cool pic. huh?  ...those are polished stainless grip frame screws & hammer strut...must be wax buildup...
My (soon to be, if I make it) 55 yr. old eyes are seeing the front sight just about like that too, so I'm beginning to think that the "shooter" with the drilled & tapped top strap was the way to go after all.
Would take care of the open sight problem.
Had a Weaver "no-tap-no drill" mount on a another Blackhawk years ago, but it removed the bluing on the barrel where it was clamped, over time.
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August 24th, 2012, 05:11 AM
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#2 |
Join Date: Nov 2011 Location: northern Wisconsin
Posts: 2,780
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I've used the file on a rear sight, myself, a time or two. You can experiment with different loafs with different bullet weights as an alternative, but when I've had a pet load that shoots high, I pull out the file and go VERY slowly with the file, shooting as I go.
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August 24th, 2012, 08:47 AM
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#3 |
Join Date: Aug 2010 Location: Tahuya WA.
Posts: 1,005
| Quote:
Originally Posted by North country gal I've used the file on a rear sight, myself... a time or two... I pull out the file and go VERY slowly with the file, shooting as I go. | Yep that's pretty much what I did...and it worked.
Suppose I could have tried a lighter bullet, going even faster yet, but 240 grain bullets are pretty much the standard for the .44 magnum, and easy to find on store shelves as well.
Cool Avatar North country gal!
You didn't mess up around Granny!
She'd come after you with that side-by-side!
HA!
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August 24th, 2012, 09:08 AM
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#4 |
Join Date: Nov 2011 Location: northern Wisconsin
Posts: 2,780
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Thanks. I do look just a bit prettier than her, though. |
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August 24th, 2012, 09:08 AM
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#5 |
Join Date: Mar 2012 Location: Texas Panhandle
Posts: 3,014
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I file mine if needed too. I love the look of blued revolvers, but I usually get stainless so I can file without it rusting or needing a blue touch up.
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August 24th, 2012, 10:05 PM
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#6 |
Join Date: Aug 2010 Location: Tahuya WA.
Posts: 1,005
| Quote:
Originally Posted by North country gal Thanks. I do look just a bit prettier than her, though.  | Um, yes Ma'am!
Don't happen to own a side-by-side or... |
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August 25th, 2012, 04:19 AM
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#7 |
Join Date: Nov 2011 Location: northern Wisconsin
Posts: 2,780
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Actually, yes, I inherited an LC Smith, about a 1913 vintage, when I married my husband and I know how to use it. |
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August 25th, 2012, 05:32 PM
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#8 |
Join Date: Aug 2010 Location: Tahuya WA.
Posts: 1,005
| Quote:
Originally Posted by North country gal Actually, yes, I inherited an LC Smith, about a 1913 vintage, when I married my husband and I know how to use it.  | I don't doubt it for even a minute Granny!
So just in case I do go fully blind, does anyone know what kind of scope base would fit in these holes, or what size & thread pitch they would be? (might need new plugs).
Preferably a one piece base.
On my old Blackhawk, I had a Leupold 4X EER scope on that weaver mount, but holding offhand, I may as well have been aiming in a 7.0 earthquake fer crying out loud!
A Leupold 2x would be my next pick, but a scope on a fine gun like that just doesn't seem cowboy-ish enough.
Notice the 50th Anniversary rear sight?
Somebody probably lost the original when they mounted a scope the first time.
Last edited by BRL; August 25th, 2012 at 05:36 PM.
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August 25th, 2012, 06:07 PM
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#9 |
Join Date: Nov 2010 Location: little rock,ar
Posts: 240
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I removed the elevation spring and screwed it all the way down.
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August 25th, 2012, 07:13 PM
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#10 |
Join Date: Aug 2010 Location: Tahuya WA.
Posts: 1,005
| Quote:
Originally Posted by phonejack I removed the elevation spring and screwed it all the way down. | GOOD GOD phonejack!
I could be bottoming out on the springs themselves!
I don't think I want to check!
Well, I do have a few more blades. |
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August 26th, 2012, 08:26 AM
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#11 |
Join Date: Aug 2010 Location: Tahuya WA.
Posts: 1,005
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I was able to slip a .024 feeler guage between the bottom of the sight housing and the top of it's cuttout in the cylinder frame, even though I had removed both elevation springs...
That's when I noticed that the sight housing was binding on it's way down.
So I stayed up late and watched some really poorly acted westerns, while I filed the areas shown, and removed about half a coil from the rear spring, and now I'm having a hard time getting a .002 feeler guage blade in.
Put in a new sight blade and I'm getting ready to head to the gravel pit and spend however long it takes to readjust the sight all over again......heh heh heh |
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August 26th, 2012, 05:03 PM
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#12 |
Join Date: Aug 2010 Location: Tahuya WA.
Posts: 1,005
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So with a stock height sight blade, lowered all the way, I was able to put some holes where I wanted them to go.
Came across some guys plinking in the woods, and they let me fire my first Ruger auto ever.
A .45 ACP with a decocker and a single stack magazine.
The grip feel was excellent!
I was impressed
They said that the gun had never been shot that accurately before.
So don't believe me...that's what they said! |
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