If it is a good gun it's fine. I believe every maker sends out flawed guns, or guns with finish anomalies, occasionally. Llama just did it more often than others in my opinion.
On the dual stamped slide, "9MM 38" (That's what my Star A model is stamped) I found out that the barrel hood has a tiny bored area that allows a 38 Auto's large diameter rim to chamber all the way. That means it will also chamber 38 Super, though one may do some careful consideration on that, especially for a gun that has a reputation for poor quality control.
I found the load recommendations in the 9MM Largo website (
http://www.9mmlargo.com/cartridge/loads.htm) interesting in that many of their loads exceed most commercial 38 Super performance! I deduced from that that some lower powered commercial 38 Super ammo might be safe in well maintained Browning system guns. Commercial 38 Super tests shown in one website (
http://38super.net/Pages/Factory2.html) show Fiocchi and PMC being lower performance than many of the 9MM Largo loads shown in the other site.
I had 2 Remington Peters 38 Super rounds that were given to me, and since they were low in the tests as well I considered shooting them while I waited for my milsurp 9MM Largo ammo to arrive. Descretion prevailed in the end however, I did shoot them but only after removing 8 tenths of a grain of powder and reloading them.
I'm interested in any else's experience in this, My Star is very tight and new (Not fired since leaving the factory in 1968) and feels like it is capable of the pressures, but when I load my own Starline brass I'll probably creep up toward the higher loads.