I had run out of one of the powders I used for 9mm, and had a bunch of others that I hadn't chrono'ed and function checked yet, and had a steel match the next day so just looked at some load manuals and plucked out a safe load to run, 4.1g of W231 with 124g FMJs at 1.145". Except... it was too weak to run the slide with a full magazine. Had a stovepipe, a failure to load, stuff like that on the first round of the mag. So had a few malfunctions to clear through the match.
Went today to run a load with BE-86. 5.7g of that and 124g FMJs set to 1.140" with CCI500s ran just about dead on at 1050fps out of a 4" barrel with good function. Ran a few to get the barrel dirty, then 10 for the test. High 1082, low 1028, SD 18, average 1049. Not screamers, but good and reliable with all my mags topped off, and was able to make 100 yard hits on a full size silhouette.