Had an interesting time at the range Thursday. I started out shooting handloads in the P3AT as usual for my warmup. Ran around 6 or rounds through it and they were clustered nicely an inch or so left of the bullseye "X" and dead on for elevation and then I loaded up a second magazine and... Bam, one hit around 8" lower than the others. Hmmm. Fired another and it hit 8" low also and close to the other low one. Pulled the target in and checked it and both bullets had keyholed. By then the wife had rounded up the two latest empties from the next zipcode and brought them to me. Both of them had splits going from the case mouth to about halfway down the case. Fired the remaining 4 in the magazine and they clustered with the other 6 around the bullseye. I never knew that a case split would make a round keyhole like that. One of them was totally sideways from looking at the target and the other was partially sideways. These were a mild load, 2.7 grains of Unique and definitely had less recoil than WWB or Hydrashocks so they weren't overloads. However, it was around the 6th firing for those cases. You learn something new every day I suppose.