Agreed.... I bought 3 from Nordic and it arrived in about 4 days. I wanted to compare my self-imposed defective factory spring with the new ones from Nordic, but the compression rate is different. So, I couldn't use it as a bench mark. I put in the Nordic spring and left about 12" of relaxed spring out of the mag tube, then cut from there. I had much more spring tension then I wanted to cut about 3 inches more off. My shotgun runs great without failure now.
If you're going to cut springs.... buy a few just in case.
Thanks for all the comments!
Sonny
The nordic spring is noticeably thicker than the SLP factory spring which explains your problem....I would never cut the factory spring (it is the fall back when others fail)....get a packet of nordics and cut one down until u start getting failures, then cut the other down to the point right before the first failed...then u have the lightest possible spring that still allows functionality.