Quote:
Originally Posted by mullenAZ
When i get home <snip> Ill try the test racking the slide with the stock spring and the 21# GP spring. If i understand right, the slide should stop in the exact same position for both correct? and if not then that's definitely a problem still?
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Yes, and yes...
There's one way to be 100% certain you don't have excessive 'spring stack length'.
1. Pull slide and set barrel and RSA aside.
2. Replace slide and press slide to full rearward travel
3. Eyeball slide from side, and put a fine pencil mark on
frame (put some masking tape there first if concerned).
That mark is the same place the slide must stop, when
a spring IS present.
4. Remove slide (pull forward against striker, pull trigger)
and reinstall barrel, RSA & slide.
5. Pull slide fully to rear. If slide edge doesn't come back far
enough to match pencil mark (even by a hair), the recoil spring
mount area will be seeing undue force during firing cycle.
If slide stops at same point, all's good, at least as far as
spring stackage goes.
Edit: the technical term for a spring's achieving an incompressible
status (ie 'as short as it can get when you squish it down and all
the coils are touching') is
solid length. Excessive
solid length was the problem with the springs that caused frame
damage.