Sometimes diversity will eat you alive buying magazines...especially across different platforms.
I have BOXES full of magazines....SIG9,SIG40,G30,G21,G17,4506,5906,SP01,CZ97B,1911 in 9 and 45,XDM45,PPK.380.
Not complaining, just sayin'.
It is NOT cool to go to the range with a SIG P229 in 9 and have a ream of SIG P226 mags loaded with 40...
Geetarman