Handi-rifle hammer bobbing - Graybeard Outdoors
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post #1 of 18 (permalink) Old 03-07-2010, 06:48 AM Thread Starter
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Default Handi-rifle hammer bobbing

I am considering cutting off the "thumbprint" part of my hammer, drilling and taping for a hammer extension, to allow for lower scope mounting. Has anyone tried this? How hard is the steel, will a M42 cobalt drill touch it? I should drill first, I guess.
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post #2 of 18 (permalink) Old 03-07-2010, 07:21 AM
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Default Re: Handi-rifle hammer bobbing

Shoot member Dinny a note. He has a fellar that does his. Becareful as to the position of your extension. You put it in the wrong place and you can not **** the hammer.

As far as the hammer read here.
http://www.go2gbo.com/forums/index.p...,201783.0.html

The FAQ in this section also covers Hammer Mods. Scroll about half way down the page.
http://www.go2gbo.com/forums/index.p...c,26264.0.html


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post #3 of 18 (permalink) Old 03-07-2010, 11:04 AM
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Default Re: Handi-rifle hammer bobbing

I have been thinking of doing this for sometime. I don't "need" to so its been "back burnered". so to speak... I have ground the tip off a couple just to gain a couple thousandth clearance.

Tim has drilled some for the newer Winchester hammer extensions that mount in a hole in the side of the hammer spur. So it can be done, but your correct, the hammer is hard, but is doable.

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post #4 of 18 (permalink) Old 03-07-2010, 11:50 AM
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Default Re: Handi-rifle hammer bobbing

I have one shortened hammer, so far, that was used as a prototype. I had it drilled and tapped to take the Win.94 hammer extension. It is the perfect height as it allows cocking and lower scope mounting. I will post a full detailed note once I get the others back with custom extensions.

Thanks, Dinny

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post #5 of 18 (permalink) Old 03-07-2010, 12:04 PM
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Default Re: Handi-rifle hammer bobbing

Here are my reports on low profile hammer mods from the FAQs, the Win 94 hammer extension was discontinued by Winchester, so you may have a real hard time finding any, there has been some discussion about using the Traditions extensions, but no one has reported on that yet.

Tim

http://www.go2gbo.com/forums/index.p...html#msg525441

http://www.go2gbo.com/forums/index.p...#msg1098382159


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post #6 of 18 (permalink) Old 03-07-2010, 01:17 PM
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Default Re: Handi-rifle hammer bobbing

I took a angle head die grinder with a sanding disc and smoothed off the end of the hammer and the top of the hammer extension while it was installed. I can now use even a Bushnell Banner on my rifle now.

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post #7 of 18 (permalink) Old 03-07-2010, 01:38 PM
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Default Re: Handi-rifle hammer bobbing

Iv'e done the same as RickT300 and had all the clearance I needed. Kurt

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post #8 of 18 (permalink) Old 03-07-2010, 02:48 PM
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Default Re: Handi-rifle hammer bobbing

One note on the Traditions extension for anyone interested in trying it, if it's like the CVA's which is left hand threaded so it won't tend to loosen with use, I dunno how hard it is to find a metric left hand tap, but I bet it ain't easy! :-\

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post #9 of 18 (permalink) Old 03-07-2010, 05:08 PM Thread Starter
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Default Re: Handi-rifle hammer bobbing

I was thinking of drilling and taping 6-32 and using an NAS1352-06-10P allen head screw and an NAS43HT3-12 spacer (yes I'm an aircraft nut too) but if I need to disassemble I will probably TIG weld a bit of 4130 into a slot ground into the hammer, while clamped up in a copper heat-sink to save the temper where it's needed.
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post #10 of 18 (permalink) Old 03-07-2010, 05:39 PM
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Default Re: Handi-rifle hammer bobbing

Sorta like the highlighted option.

Tim

Quote:
Originally Posted by quickdtoo
Ok, Fred's idea is definitely the easiest and least expensive way of shortening the hammer. A little grinding and testing for fit, then little touch up bluing and you're done. I went from .420" high Burris to .270" medium on my .405 Win with the Whitetail Expedition scope.

I thought I had a better close up pic, but I found out I didn't after the fact, so this one will have to do....
http://img.photobucket.com/albums/v3...05WinClose.jpg

http://img.photobucket.com/albums/v3...ds/Before5.jpg

After..
http://img.photobucket.com/albums/v3...ods/After6.jpg

[glow=red,2,300]Here's the hammer before I touched it, the small extension top right would be a alternative if you wanted a light weight extension and are willing to anneal, drill and tap the hammer, and cut knurling in the extention with a file. It consists of a 8x32x1" socket head machine screw and an 8/32x1/4"x3/4" threaded aluminum sleeve from True Value, it weighs 60grs compared to the factory extension at 125gr. The Winchester extension weighs just 30grs[/glow].

Here's the hammer after I thinned the mounting location and shortened the spur. It didn't take long on a green wheel. In fact, I made it just a little shorter than I should have, but since the factory extension can be mounted where ever you need it as long as the set screw can be secured, I just moved it up the spur a tad and tightened it, otherwise it touched the barrel release.

http://img.photobucket.com/albums/v3...ods/After0.jpg

http://img.photobucket.com/albums/v3...ods/After1.jpg

This pic shows approx how much I took off the spur.
http://img.photobucket.com/albums/v3...ods/After2.jpg

Tim

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