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Old 12-23-2014, 11:37 PM   #11
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PPFMJ .22
Thanks, good tips. The gun is so new the barrel also still has the barely visible circular grooves which make the zipping sound as the recoil spring moves when I rack the slide. I'm hopping a couple hundred rounds will polish off the scratches the cut spring made.
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Old 05-04-2019, 01:30 PM   #12
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SF18A .22
Quote:
Originally Posted by MGMike View Post
I have borrowed this from another thread, as it has a bearing on the "clipped" recoil springs found in some Interarms and S&W .380 pistols.

My suspicion --and it's only that; no information to confirm it-- that the reason Interarms introduced clipped recoil springs in PPK/s and PPK .380s might have been because, after the decision was made to omit the barrel boss counterbore to reduce manufacturing cost, it was discovered that the existing recoil springs no longer compressed comfortably in the shorter space available, especially when dismounting the slide. Then it was discovered that a goodly supply of recoil springs had already been purchased, so to avoid discarding them they were clipped to a workable length.

That's only my suspicion, but I can't think of any other reason not to use a closed and ground coil on the rear end of the spring.
If the pistol has a counterbored barrel boss, the correct spring is one with a closed and ground rear coil. If there is no counterbore, the clipped spring is not very elegant but will work provided it is not too long.

I further suspect that that little bit of Ranger's learned experience was not passed on to S&W, who proceeded according to the Walther drawings and did not compensate for the omission of the counterbore. The difficulty in dismounting the slide on some S&W guns results from the fact that the spring "goes solid" before the slide has cleared the frame rails, unless the coils are distorted by brute force into an eccentricity that allows them to stack more tightly. It is unknown to me whether S&W subsequently re-engineered the spring.

Just my suspicion, mind you.

M
I cannot seem to locate a "genuine" Walther ground recoil spring for a .380 1966 PPK. Do you have any idea's where I should look?
Thanks.
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Old 05-04-2019, 02:38 PM   #13
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MGMike .38
I'd start by trying M&M Gunsmithing. See post #6.

https://www.waltherforums.com/forum/...ete-parts.html

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Old 05-05-2019, 10:35 AM   #14
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Thank you sir. You are a gentleman and a scholar.

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