Not necessarily just "working up a load". Working with new components and a high pressure cartridge. Any can fail, and damage can occur. When you cross the 30K PSI range, bad things go really bad. As you can see, it could have been very bad. As I said in the post, had this round been fired in the OEM barrel, there is no doubt in my mind the case would have ruptured. Gloves (among other safety gear) are old habit when working magnum loads up to the max (which is why I have/like magnums. Why bother with "special" rounds?). Gloves are inconvenient, uncomfortable, cumbersome, and take away from the "feel". I have very large hands/fingers, so gloves add a handicap, with already marginally sized trigger guards. I started out with 2 eyes and 10 fingers, and would like to leave with them, if possible. I've seen the results of really bad, and I do what I can to minimize the risk. Cartridge component combinations can be unpredictable. Change one thing, just a little, and the result can be quite profound. There's a fine line between "just enough" and "too much". I often find myself "up to and touching".