Thanks for all the replies.
I do tend to slam the mags into the well during reloads.My 8-rounders insert flawlessly when loaded to capacity.The problem only exists with the 7-rounder.As this mag is only used at the range,it is no great problem.When loaded to capacity you couldn't drive it in with a 4 pound sledge hammer.With only 6 loaded it works fine.
Forgive me if I gave the impression that this was a life-threatening problem.My interest is solely in solving the problem.
Clark