Originally Posted by
ECVMatt
I have an ETS 9 round mag and it has worked 100% of the time with 150 rounds of WWB 115. I know this doesn't work for you, but when I need 10 rounds I switch to my 48 frame. I am not sold on the Shield Arms mags yet, so I stick with my 10 rounders.
In terms of making 9mm's work in a single stack magazine I think back guns like the P08, P38, C96, 225 and the list can go on and on. I think single stacks 9's have been pretty well vetted. Why it is difficult with the Glock 43 seems a mystery to me.
You might give the ETS mag a go. They are not terribly expensive and might be a good option.