Well, the spring on my Mossberg 590A1 got substantially easier to load or unload after it was left loaded for an extended period of time.
I am aware of the studies that say that springs do not wear out from compression, after they take their initial set. I believe leaving it loaded may help it take an initial set.
In addition, but those studies assume the spring is not deformed beyond its design limits. If any spring in a gun is at or past it's design limit, it is a tube mag spring.
Bottom line, it may not do anything, but it sure can't hurt. Clipping a couple of coils off can hurt. I would try the no harm option first.
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