Author Topic: More Pondering About Springs  (Read 2845 times)

Offline Reinz

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More Pondering About Springs
« on: July 31, 2011, 06:28:03 AM »
Ok, I pull the recoil spring out of a gun with supposedly less than 100 rounds and put in a new one.

I fire 30 rounds  and pull the spring to measure and compare and here is what I found.

Brand new spring - 1.55 in

used - < 100 rds - 1.284 in
 ( I think much more)

w/ 30 rds        -   1.257 in

Now that 30 round spring lost almost 1/3 of an inch.  From previous posts in the past, some guys would freak out at that loss and replace it.

I'm  sure someone smarter than me will chime in, but I sticking to my original story that it is not all about length, but compression as well.

Who knows, maybe those springs do a rapid compress after the first mag, then slowly compress afterwards.

Offline Robar233

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Re: More Pondering About Springs
« Reply #1 on: July 31, 2011, 08:50:04 AM »

 I have not followed similar posts to the one you just made. I am no expert either. I have been to some manufactures armorer schools. There I was told the change in overall length of a recoil spring is not the major concern. It is ability of the spring to resist compression that is important. So long as the spring was made with in specifications; the round count is what should dictate its replacement.
 My thought is shoot it, count it, replace it, and ENJOY IT!