World War 2 question

In Saving Private Ryan and now in Band of Brothers I’ve seen American soldiers tapping their clips/magazines/bandoliers against their helmets prior to loading them into their weapons. Was there a practical reason for having done this or was it a ‘knock on wood’ kind of superstitious thing or is it just a Hollywood thing?

It’s done to make sure all the rounds are seated properly and tensioned properly against the spring inside, in order to preclude jamming.

Thanks Tedster. I thought it might be to attempt to clear dust or debre that might have gotten in the device but I’m never sure what to believe from movies.