Question for you experienced reloaders. When sizing cases for the first time, especially these long BPE cases of 3 to 3.25 inches, do you tend to lose 1 case per batch during initial sizing?

So far I've lost 1 each of a 500 BPE, 450 BPE and 360 BPE lot. I overall feel like I'm learning (I've been doing this roughly a year), but I just lost another case. They are so expensive, it's irritating.

I am lubing with Imperial sizing wax, and not trying to size on one pass. These 450 cases (BELL) have been the hardest to do so far.