In general, most of us CGers
who shoot a lot, or compete regularly have gotten quite competent with 10 rd mags.
The real problem is the government forcing a limit upon us on mag capacity. That is what we are fighting. Government imposed limits on constitutional freedoms.
Since young folks like yourself are our future, we would like to see you not only become competent with firearms, but become competent in Constitutional History and in American Freedoms.