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Ginny, Stretching the spring out to the "max" won't have any affect on being to be able to get the full 8 rounds in the mag. The springs are designed to collapse to a certain point, and making it longer by stretching has no real effect. In reality he has weakened the spring but extending it beyond it's design. Much like bending a paperclip, he has twisted the hinge curve surface of the metal past the design.
I lived up in Michigan, and worked as an engineering assistant for Saginaw Steering Gear (Delphi) for around 5 years. Steering Gear manufacturers their own springs because outside vendors couldn't get the spring tensions right. I discussed the design and manufacturing process about the springs a great length with a couple of engineers that managed the spring lines. They taught me a great deal about them.
One thing I was taught that most don't understand is that springs are better kept under tension, than not.
To cast a couple examples look at the springs in a cars suspension system. They are always loaded under stress, and the spring tensioners for the serpentine belts are always kept under load as well. That's by design, and not by happenstance. So, it's better to keep your mags loaded as much as possible to keep the springs under tension to get them to last their longest.
Regards,
Gregory
I lived up in Michigan, and worked as an engineering assistant for Saginaw Steering Gear (Delphi) for around 5 years. Steering Gear manufacturers their own springs because outside vendors couldn't get the spring tensions right. I discussed the design and manufacturing process about the springs a great length with a couple of engineers that managed the spring lines. They taught me a great deal about them.
One thing I was taught that most don't understand is that springs are better kept under tension, than not.
To cast a couple examples look at the springs in a cars suspension system. They are always loaded under stress, and the spring tensioners for the serpentine belts are always kept under load as well. That's by design, and not by happenstance. So, it's better to keep your mags loaded as much as possible to keep the springs under tension to get them to last their longest.
Regards,
Gregory