I was told the other day by a LEO friend that I may have a problem someday. I load the mag, rack one, then put one back in the mag. He says I should not replace the one I rack because it will cause problems with the spring in the mag and could cause a failier to feed.This does not sound right to me. Has there been problems? Also, should I unload the mag from time to time to realese spring pressure, I have heard yes and no need to. Oh, I carry a G17.