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... As far as springs, the most I've gotten out of Sig is to change the recoil spring every 5,000 rounds ...
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FWIW – Several years ago I replaced the recoil springs on the P228’s where I worked and started getting reports of occasional feeding problems.
I talked to a Sig customer service rep, who suggested that the problem might be weak magazine springs. Apparently the newer recoil spring increases the slide’s forward velocity, which reduces the time the magazine spring has to “present” the next round for loading. (And we were using +P+ rounds, which sped things up anyway.)
Replacing the magazine springs corrected the problem.
Quoted:
… I carry a 220 on duty and notice that I have to wipe it down almost every day to keep the surface rust away. Is there some type of surface protectant (besides Gunkote, NP3 or anything else expensive) that will keep the rust monster away? …
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Older blued Sigs are notoriously rust prone.
Recently I’ve been using the Sentry Tuf-Cloth on my blued P228, which gives it a dry, rust resistant coating which seems to be pretty good. I also use it on the mags, which are also rust prone. You might want to try that. Brownell’s sells it.
MilTech-1 has a [b]bad[/b] reputation for corrosion resistance.