Funny I was just thinking along the same lines. I've been reloading for about a year and maybe 8000 rounds this first year, no major problems so far.
But yesterday while shooting all my pistols at the range (including 357, 9mm, 380, and 45ACP) I saw something disturbing while picking up brass. I'm not sure these brass casings were mine, but they easily could be (and I did compare the firing pin marks on brass I knew came from my pistols to what I picked up, this pickup brass is mostly what I was shooting)
I picked up two 380ACP cases with vertical splits from the neck halfway down the body, and one 45ACP case with the same kind of split. I'll post pix if I get them later, I kept the cases. This is a very clear sign of case failure, no? Both 380 split cases had the same headstamp, "* I * 380ACP" and the 45ACP split case was a "WCC" headstamp.
The 45s were 230LRN (homemade cast boolits from Lee moulds) over 5.3 grains of W231, iirc the OAL was 1.230". 4.5 grains of 231 is a decent practice load with 230LRN I think, I just wanted them a little warmer to get closer to the feel of factory ball ammunition. I've loaded up to 5.6 grains of 231 before without any problems. These were being shot in a S&W M&P45, I didn't notice anything unusual like stuff blowing out of the action and nothing went kaboom on me that I could tell.
The 380s were Magnus 100LFP bullets I bought over 3.2 grains of W231, OAL 0.960". That's not supposed to be that hot. I've loaded 95JSP rounds in 380 and loaded them up to 3.8 grains of W231 with nary a problem, I'd think if anything these lead bullets ought to result in lower pressures even if they're 5 grains heavier. These were being shot out of a Bersa Thunder380, which being a direct blowback action tends to be dirtier and grittier for the shooter. But, no kabooms and nothing really that would have gotten my attention in that respect.
I'm puzzled because I wasn't really shooting a new load. Both the 380 and the 45 were lead bullets I'd loaded up for practice, and I didn't *think* they were loaded that hot. I was advised to throw out all the remaining rounds in both batches of 45 and 380; being stoopid I didn't. I did shoot off the rest of the box of 380 about 20 rounds, this time catching all the brass and checking it. Three more had the "* I * 380ACP" headstamp, and no signs of pressure that I could see and no splits.
I still have 100 rounds of the 380 loaded up and maybe 100 of the 45. I'm not convinced that I have a problem, but there is this nagging doubt. If you were me would you do anything like throw these out and reduce the powder charge?