[John Sabato]

It is possible that the magazine catch is worn and consequently holds the magazine a little lower than necessary for good reliable feeding. One way to test is to rest the gun in your off-hand for shooting and while doing so, exert some pressure upwards to make sure that the magazine sits as high as possible. If you find that you get reliable functioning shooting this way, try replacing the magazine catch. Or, the more expensive alternative would be to ship it to one of the competent Lugersmiths, like LugerDoc, or G.T. (who is the magazine expert... he can make your magazines better than new)… and have them tune your Luger to the magazines you own.