I have a cheap 30 round banana style magazine for my 10/22, it has been loaded for at least 6 years i unloaded it by hand the other day yeah there is almost no tension in it what so ever. I literally had to hit the mag to make the spring "pop" another round up i waited a bit and it reloaded fine but i have yet to shoot it so i will see how many ftf i have with the mag within the next week.