Went to the range today, BT380 I bought used a few weeks ago. I shot 50 Tulammo FMJ, 65 Winchester flatnose FMJ (Walmart white box) and about 10 Hornady JHP. One factory mag, one brand new ProMag, alternated between them.
With the Tulammo, the last round in the mag failed to feed, virtually every time, and I ran at least the last 18 loading only three at a time (using both mags). I don't quite know how to describe it - essentially a stovepipe, I guess, but the round wasn't sticking partway out the ejection port, it was contained inside but sort of trapped, almost vertical, against the back end of the barrel.
Zero malfunctions with the Hornady; one semi-stovepipe FTF with the Winchester.
I guess the Tulammo was accurate enough to poke holes in paper, but with all the misfeeds, I'll never buy that crap again.