If I,m not mistaken the P13 is slightly shorter in the grip than the P14. So the P13 mags won't work in the P14 (or RIA1911-A2 P14 clone, a gun I recommend by the way) They will work in the P12 if you don't mind the gap (or can find a spacer) between the bottom of the mag and frame.
In theory they should work in the P10 (with and even bigger gap) but I've found my P10 cycles so fast that only P10 mags can work as the larger mags (P12, P13, P14) can't get the round into position fast enough to avoid bolt over base feed failures, unless you download the mags to 10 rounds which kid of defeats the purpose.
I also +1 to the MecGar mags in the P14 and RIA 1911-A2.