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Walther SP22-M4 ..trigger job

 
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DanChong



Joined: 06 Jan 2009
Posts: 3
Location: Davie, Florida

PostPosted: Sun Nov 13, 2011 9:52 am    Post subject: Walther SP22-M4 ..trigger job Reply with quote

I've read just about all the opinions regarding this Walther, but to me it is still a work in process and I don't give up on it until done. On the plus side, it seems to like CCI Standard Velocity. Out of 500 rounds, I had 3 failure to feed and one stovepipe,...that's it. Two of those could have been limp-wristing. I added the picattiny rail to use a red dot scope and added the weights. I was afraid that I would have to move the scope ahead of the ejection port, but no such need. As it is, it balances well and it is a lot lighter than my son's Ruger Mark III slabside. Accuracy is better than the Ruger's.

I've been able to adjust the trigger to the point that it feels like a very smooth double action with almost no overtravel. I'm getting use to feel a "wall", although not a true two-stage trigger. I don't have a scale, but it feels like 3.5lbs. As it is, I would like to improve the trigger for a shorter and lighter action. Question is, does anybody knows a gunsmith that worked these kind of guns? If not, has anybody done the gunsmithing themselves? Thanks. Dan

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Rover



Joined: 15 Nov 2008
Posts: 1991
Location: Scottsdale AZ

PostPosted: Sun Nov 13, 2011 1:47 pm    Post subject: Reply with quote

Could be your ammo. Try something else.
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DanChong



Joined: 06 Jan 2009
Posts: 3
Location: Davie, Florida

PostPosted: Sun Nov 13, 2011 5:14 pm    Post subject: Reply with quote

Thanks Rover, but I was talking about trigger action....different bullets will not make a difference.
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william



Joined: 01 Mar 2004
Posts: 368
Location: New Hampshire, USA

PostPosted: Mon Nov 14, 2011 4:43 am    Post subject: Reply with quote

If Rover says it's your ammo, it's your ammo.
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DanChong



Joined: 06 Jan 2009
Posts: 3
Location: Davie, Florida

PostPosted: Mon Nov 14, 2011 5:49 am    Post subject: Reply with quote

Am I missing something here? If a .22 pistol.....any pistol, have a long and somewhat heavy trigger pull ....how does changing the ammo is going to make the trigger feel any better?
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RandomShotz



Joined: 04 Dec 2010
Posts: 378
Location: Lexington, KY

PostPosted: Mon Nov 14, 2011 6:01 am    Post subject: Reply with quote

Dan:

Yes, you are missing something. Flip back through Rover's posts and you will see that taking him seriously is to be done intermittently and judiciously.

But I would try different ammo all the same. I mean, it can't hurt, right?

Roger
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Rover



Joined: 15 Nov 2008
Posts: 1991
Location: Scottsdale AZ

PostPosted: Mon Nov 14, 2011 6:22 am    Post subject: Reply with quote

"Out of 500 rounds, I had 3 failure to feed and one stovepipe,...that's it. Two of those could have been limp-wristing."

Sure sounds like an ammo problem to me....but I have found some lots of CCI Standard give me the same problem in my S&W41. I think some of them have a light powder charge; I can hear and feel the difference.

Get a trigger job if it makes you happy.
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wildpat



Joined: 10 Feb 2012
Posts: 4
Location: South Dakota

PostPosted: Fri Feb 10, 2012 11:09 pm    Post subject: Walther SP22 M4 Reply with quote

it is a true work in progress... Sure, this pistol did not have a lot of following, but it shoots very well, as far as I can judge (I'm quite the newbie re. standard pistol, on the pure mechanical side I do have some decent experience). This one is my project pistol too, and yes I do have fun tweaking it.
A couple of details to know:
Kinda 2stage trigger... So far I got it as smooth as it can be, and it is good, not outstanding but good. Maybe it will still evolve as the gun is shot some more. It has less than 500 rds through it.

The recoil spring, labeled "main spring" on the schematics seems to be rated for hi velocity ammo, 1200fps or above. I have and like a lot CCI SV for my Trailside, it is just a bit light for the SP22, as most of the SV ammo I tried in it. The direction I am heading to is to change this spring for a less powerful one. I have some springs coming from Wolff. I may try to also tweak the hammer spring.

The internal moving parts are... crudely made, to say the least. If you have the time and the inclination, take it apart to the last pin and clean/lap/polish all the contact surfaces. I did it last weekend and it showed immediately. The number of alibis was down by half.

This handgun groups at 25yds in the 5/8" range for 5 shots on a rest. I don't have a Ransom Rest.
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