Many guns don't like to chamber the first round if you 'slingshot' the slide. If he's doing this, have him use the slide release instead & see if that fixes the problem.
I have to agree with jj on his assessment of this comment.
What does the owners manual say to do?
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Amendment II:
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."