Today I fired five full magazines plus an additional round in the chamber each time.  I have three magazines, used them all, and had two hiccups with the second mag.  Otherwise everything fired perfectly.
Mag I: 7 GDHP 124 gr, 7 Winchester FMJ 115 gr - clean.
Mag II: 7 GDHP 124 gr - 2nd & 3rd rounds double fed - quick fix with a piece of wooden chop stick; 14 Win. FMJ 115 gr. - clean.
Mag III: 7 GDHP & 7 Win. FMJ 115 gr. - clean.
Round total is now 386.  I'm pretty satisfied as I've had other pistols with problem mags.  I now carry my spare mag in one of RJ Hedley's excellent mag carriers.  Keeps it clean and is sturdy enough to provide some protection from dings.
At home for cleaning, I stripped the #II mag and inspected the weld, compared spring length to original length and compared feed lip opening dimension to the other mags.  Nothing obvious.  I gave the lips a little tweak in the vise. Mag #II willl be held for practice and experimentation until I get it relaible or send it back to Rohrbaugh.
BTW:  Practice does make disassembly / assembly very uneventful and easy.  All I use is a brass "Stop Stick" and a punch.  
