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Search: Posts Made By: megafiddle
Forum: AllOutdoor.com Today, 08:57 PM
Replies: 2
Views: 63
Posted By megafiddle
Correction: The previous post should have...

Correction:

The previous post should have said "The point of impact is sin(angle) x drop, where angle is firing angle from horizontal".

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Forum: AllOutdoor.com Today, 08:52 PM
Replies: 2
Views: 63
Posted By megafiddle
At steep angles, the point of impact does rise. ...

At steep angles, the point of impact does rise.

The effect increases with range though. So it doesn't make sense in the article that the effect would show up at 25 yds, but not at 75 yds.

The...
Forum: Gunsmithing & Troubleshooting Today, 06:57 PM
Replies: 20
Views: 255
Posted By megafiddle
That appears to be a different edition of Volume...

That appears to be a different edition of Volume I, although there is similar information on pages 65 and 66 of my copy.

Mine is described as:

The Colt .45 Automatic, A Shop Manual
(Volume 1...
Forum: Gunsmithing & Troubleshooting Today, 02:50 PM
Replies: 20
Views: 255
Posted By megafiddle
In Volume II, Jerry Kuhnhausen reversed his...

In Volume II, Jerry Kuhnhausen reversed his position on that.

Myself and others did some calculations using ordnance specs. If a gun is built to nominal specifications, the contact with the VIS...
Forum: Fusion Firearms 03-31-2020, 11:22 PM
Replies: 8
Views: 936
Posted By megafiddle
Then I don't understand the post above by Bob...

Then I don't understand the post above by Bob Serva[/QUOTE]

Maybe just a matter of nomenclature.

A blue finish is a form of black oxide.

My point was that "blued" is an accepted term for the...
Forum: Fusion Firearms 03-31-2020, 10:20 PM
Replies: 8
Views: 936
Posted By megafiddle
Black oxide is not the same as bluing. One...

Black oxide is not the same as bluing.

One form is often used on industrial parts like socket head cap screws.

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Forum: Gunsmithing & Troubleshooting 03-30-2020, 08:12 PM
Replies: 66
Views: 1,997
Posted By megafiddle
Try this: Reassemble the mainspring housing...

Try this:

Reassemble the mainspring housing with the original spring, except insert the mainspring cap retaining pin from the outside of the mainspring housing instead of the inside. Leave just...
Forum: Gunsmithing & Troubleshooting 03-30-2020, 05:30 PM
Replies: 9
Views: 693
Posted By megafiddle
Some of the Glocks had horrible scores running...

Some of the Glocks had horrible scores running vertically along the breechface. Reportedly from worn broaches.

Hard to say with that one. Could have been a hard particle of something dragged along...
Forum: Gunsmithing & Troubleshooting 03-30-2020, 04:24 PM
Replies: 9
Views: 693
Posted By megafiddle
If you take the slide off, does it extend all the...

If you take the slide off, does it extend all the way down to the bottom of the breechface, and around onto the disconnector rail?

Cracks usually extend all the way to at least one edge.

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Forum: Gunsmithing & Troubleshooting 03-30-2020, 11:30 AM
Replies: 42
Views: 3,681
Posted By megafiddle
(I'm reposting this to see if an attachment works...

(I'm reposting this to see if an attachment works better; the image I inserted in the earlier post disappeared)

This fixture is used for cutting frame rails to width.

The front of the frame is...
Forum: Gunsmithing & Troubleshooting 03-27-2020, 08:55 PM
Replies: 21
Views: 705
Posted By megafiddle
I don't understand what's different about fitting...

I don't understand what's different about fitting this barrel (aside from Nowlin saying the upper lugs shouldn't need adjusting).

Perhaps Nowlin cuts their 5" and 6" lugs to the same dimensions....
Forum: Gunsmithing & Troubleshooting 03-27-2020, 03:50 AM
Replies: 21
Views: 705
Posted By megafiddle
The depth of the first slide recess should have...

The depth of the first slide recess should have no effect on the engagement. The depth of the slide recesses need to be sufficient to provide clearance for the barrel lugs.

The engagement is...
Forum: Rimfire! 03-27-2020, 03:24 AM
Replies: 8
Views: 833
Posted By megafiddle
The Browning Challenger also had the magazine...

The Browning Challenger also had the magazine release at the bottom of the grip frame.

I believe all the Ruger 22/45 had the magazine release located like a 1911.

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Forum: Gunsmithing & Troubleshooting 03-25-2020, 11:21 PM
Replies: 8
Views: 441
Posted By megafiddle
To really clearance the exposed portion of the...

To really clearance the exposed portion of the barrel, you would have to taper the top of the barrel from the first barrel lug back to the barrel hood. This is a lot of work, and has to be done very...
Forum: Gunsmithing & Troubleshooting 03-24-2020, 06:24 PM
Replies: 66
Views: 1,997
Posted By megafiddle
And yet if you push the hammer against the firing...

And yet if you push the hammer against the firing pin stop, it will stay there?

Or does this only occur when you dry fire?

Try this:

Dry fire several times, just cocking the hammer manually....
Forum: Gunsmithing & Troubleshooting 03-24-2020, 04:41 PM
Replies: 66
Views: 1,997
Posted By megafiddle
That sounds like "condition 2" I described above....

That sounds like "condition 2" I described above.

The question is, why isn't the firing pin pushing the hammer back off of the firing pin stop and holding it there?

If you're able to pull the...
Forum: Gunsmithing & Troubleshooting 03-24-2020, 04:27 PM
Replies: 66
Views: 1,997
Posted By megafiddle
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Forum: Gunsmithing & Troubleshooting 03-24-2020, 11:06 AM
Replies: 22
Views: 1,116
Posted By megafiddle
Without any additional instructions for locating...

Without any additional instructions for locating the lug at the top of the vise jaws, I have to interpret it as the lug sitting cradled in the gap between the jaws.

"Hold the safety in your vise...
Forum: Gunsmithing & Troubleshooting 03-24-2020, 10:34 AM
Replies: 11
Views: 638
Posted By megafiddle
The ordnance spec shows .099" +.002" for the...

The ordnance spec shows .099" +.002" for the slot, and .377" -.010" for the front of the slot to the rear of the extractor.

Nominally that would be .278" from rear of slot to rear of extractor....
Forum: Gunsmithing & Troubleshooting 03-24-2020, 12:50 AM
Replies: 66
Views: 1,997
Posted By megafiddle
Yes, even 6 lbs is more than enough to overpower...

Yes, even 6 lbs is more than enough to overpower the firing pin spring.

The mainspring is captive, with the mainspring cap having limited travel within the mainspring housing. At some point along...
Forum: Site Questions & Suggestions 03-23-2020, 10:26 PM
Replies: 0
Views: 62
Posted By megafiddle
Attached photos disappear after a while

I attached a photo to a post about a week ago. The photo appeared in the thread for a short time. Then it disappeared, leaving only a little box with an X in it.

I uploaded the photo and attached...
Forum: Gunsmithing & Troubleshooting 03-23-2020, 10:15 PM
Replies: 42
Views: 3,681
Posted By megafiddle
No problem. Thanks! -

No problem. Thanks!

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Forum: Gunsmithing & Troubleshooting 03-23-2020, 10:06 PM
Replies: 22
Views: 1,116
Posted By megafiddle
That's true. I've used a vise as shown by...

That's true.

I've used a vise as shown by Harrison Design. The result works fine.

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Forum: Gunsmithing & Troubleshooting 03-23-2020, 09:06 PM
Replies: 22
Views: 1,116
Posted By megafiddle
The Harrison Design instructions have the thumb...

The Harrison Design instructions have the thumb safety stud oriented directly above the thumb safety pin. Both the stud and pin set in the vise jaws along a vertical line. The stud is then filed...
Forum: Gunsmithing & Troubleshooting 03-23-2020, 08:09 PM
Replies: 66
Views: 1,997
Posted By megafiddle
When you have the firing pin out, check if the...

When you have the firing pin out, check if the spring was installed correctly. The smaller end of the spring should be toward the rear of the firing pin, where it will fit tight on the firing pin.
...
Showing results 1 to 25 of 303

 
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