Ok, I'm a mag retard.  I can build any rifle you want, but when it comes to mags, my experience is somewhat limited.  I started to run torture test on some of my older mags to see if I could make them fail.  Well, two did.  Both had multiple and repeatable FTF with less than 10rds in the mag.  I'm thinking it's time for a new spring.  While I got the mag apart, I decide to change the black followers to green.  Other than finish wear, the mag bodies are 99%+.

My question after all of that is:  Should I expect 100% performance out of these rebuilt mags or do I have to "break them in" with another torture test to work any bugs out of them.

Thanks for any info.

Try them out and see ,If  the feedlips good then they should be good you are replacing everything else with  new parts !!! Get new springs!!!

Quoted: Try them out and see ,If  the feedlips good then they should be good you are replacing everything else with  new parts !!! Get new springs!!!

Thanks for the info.  I put new springs in with the green followers.  I was wondering if they are good out of the gate or do they need a break in period before I call them reliable.

They should be good form the "Git Go" if the feed lips are ok. I wouldn't trust any mag, even if new, until fully tested though.