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Hammer screw tension on PISTOL Grip '73


Rance - SASS # 54090

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Seems I remember reading on another post that the hammer spring on a '73's have

an adjustment screw on the bottom and a locking screw on the bottom..

 

On my pistol grip '73 both screws seem to be adjustable??

Both came from custom rifle makers with the back screw not being tightened down..

A fellow shooter told me the front one is a strain screw??

How do these adjust?

Which one to adjust first?

Should the back one just be down tight and do all adjustment with the front one?

Or.. have I just got the wrong information?

 

Rance ;)

Thinkin' my '66's didn't have these.. :blush:

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I run my spring retaining screw fully tight and the tension screw just barely touching the spring. I have put a small lock washer between the spring and the frame (over the retaining screw on 1 of my 73's. It works fine for me.

 

Check out Marauder website.

http://marauder.homestead.com/Rifles.html

 

Randy

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Yes the 73 has two screws and the 66 has one. I use both to adjust mine to where I want it to be set at for the primers I'm using at the time. The screw closest to the trigger is a fine adjust and the farther is a course adjust. Take the two screws out to to remove the stock and it will make more sense when you see how the two screws are used to adjust the hammer spring tension.

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I've had the stock off and looked...

I always thought the back screw was always to remain tight..

but neither of my custom built '73's came from the builder that way...

It looks ta me like the front screw arc's the spring more ??

and the back screw tightens it down..

I also put a washer between my frame and spring on my '66 (one screw)

Is this recommended on a '73?

 

Rance ;)

Am I thinkin' right?? :wacko:

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I've had the stock off and looked...

I always thought the back screw was always to remain tight..

but neither of my custom built '73's came from the builder that way...

It looks ta me like the front screw arc's the spring more ??

and the back screw tightens it down..

I also put a washer between my frame and spring on my '66 (one screw)

Is this recommended on a '73?

 

Rance ;)

Am I thinkin' right?? :wacko:

 

Your builder has it correct. If you take the rear screw out you will see it is a counter sunk type screw going into a counter sunk type hole. (At least some of the Uberti) It's done like that so it can slightly swivel or rock side to side. If yours is not it will still work.

To adjust, back both front/strain screw and rear hammer spring screw off, then tighten the rear hammer spring screw . Once it bottoms out loosen it about a half turn or so. Now you can use the front/strain screw to lift the spring up to add tension. If the rear is fully tight you won't have much range of adjustment on the front/strain screw.

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Interesting thread.

 

If you tighten the threaded screw in the spring ( at the end) you strengthen the spring. I loosen the threaded spring screw ALL the way out and drop a drop of Loctite. Then I start screwing in the tension screw. When it fires, I take another 1/4 turn and drop another drop of Loctite. Federal primers. 'Course, all this was done 10/12 years ago. RRR can attest to the effectiveness of the set up.

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