I am probably the only person with a former spring maker as a co worker! All springs are not created equal. Some will take a set and others won't. The quality of the spring and weight of the cartridges make to many variables for a set answer. There are spring actuated landmines from Vietnam and the Soviet invasion of Afghanistan still killing people. Some people recommend only half loading a magazine, and some high capacity mags won't function new fully charged. I had a service 1911 magazine loaded and forgotten in a seabag. It functioned perfectly 20 years later. The massive leaf springs in my Mauser 98s have never failed, while a Colt SAA broke them with regularity. Your best bet? Buy the very best and keep one charged and test periodically. That, or get a good wheel gun ;^)