I got it in the early 1990s ... it's the blued version with the adjustable "target" sights.
It faithfully has eaten every brass or nickel plated cartridge I have ever attempted to feed it, ranging from Chicom ball to various hollowpoints. It even does OK with Blazer (aluminum case). It just does not like those Wolf cases ... they stick in the magazine.
I've logged over a hundred thousand in my old 69Cxxxx Browning, mostly Winchester 115-grain ball from a semitrailer load during a training contract for *special embassy personnel*, with largish quantities of Shelbyville Super-Vel 90 grain JHPs, 123 grain Lapua ball and Canadian C1 DA60 and IVI loads also noted. As well as British RG-Z loads, Israeli Tzz, and FN *Oxyless*
My observations about Blazer and Wolf cases are about the same as yours, though the extractor would sometimes tear through the rim of some early Blazer aluminum cases, and the problem with the Wolf laquered steel cases is that they scuff the cases of each other inside the mag and bind in a Browning GPs single-row feed magazine, just as they do in some open-bolt firing SMGs.
I mostly carry a .45 for anything serious, but my old Browning GP has been a good and faithful companion for almost 40 years now, and gets a good exercise every now and again. It'll feed empty cases or most any profile of bullet, reliably fires anything with a working primer stuffed into it, and fits my hand like Mssrs Browning and Saive designed it just for me. Good old shooter.