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S&W-Smithing Maintenance, Repair, and Enhancement of Smith & Wesson and Other Firearms.


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Old 05-22-2020, 07:29 PM
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I lost the recoil spring for my Model 4506/
I ordered a replacement from Midway/
The order arrived this P.M. which contained two springs (#193020000).
One spring is approx. two inches longer than the other one.
Which spring is for the Model 4506 ?
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Old 05-22-2020, 07:39 PM
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Typically new recoil springs ship with a new firing pin spring. Is one spring significantly smaller diameter than the other?
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Old 05-22-2020, 08:02 PM
JohnHL JohnHL is offline
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The long, heavy spring is for full power ammo.

The short, light spring is for low power bulls eye work.

John
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Old 05-22-2020, 08:09 PM
jsbethel jsbethel is offline
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The spring kit used to come with directions.
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Old 05-22-2020, 08:22 PM
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Quote:
Originally Posted by squidsix View Post
Typically new recoil springs ship with a new firing pin spring. Is one spring significantly smaller diameter than the other?
Both springs are the same diameter.one is approx. two inches longer
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Old 05-22-2020, 09:53 PM
mscampbell2734 mscampbell2734 is offline
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Quote:
Originally Posted by JohnHL View Post
The long, heavy spring is for full power ammo.

The short, light spring is for low power bulls eye work.

John
What he said.

Do NOT ever shoot ball or defensive HP loads with the short spring. Several officers I know cracked their frames using the light spring to help "break in" their guns.
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Old 05-22-2020, 11:13 PM
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Is a standard S&W OME mainspring acceptable for factory 230 grain FMJ ammo or should I use the longer mainspring ( which is difficult to install) ?
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Old 05-22-2020, 11:23 PM
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Use the longer one for hardball.
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Old 05-23-2020, 02:41 AM
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Long Spring=Good

Short Spring=Bad

John
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Old 05-23-2020, 08:59 AM
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Long recoil spring is for full power loads, short spring is a lighter weight and for reduced power target loads only. Do not use the short spring if shooting full power ammo.
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Old 05-23-2020, 11:51 AM
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4506-1 Recoil Springs
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For office use only
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