I am not sure whose round that was. It was a factory round, nato ball, I had a couple of loaded mags in the range bag and used one of those. I was more concerned about making sure that the bullet wasn't stuck in the barrel at the time. When I though about the case, it was on the ground with the others.
Yes Jo, it is a 9mm, it is a G-19.
When I first picked up the gen 4, I really didn't feel any difference. Then, when I was able to compare them side by side, the Gen 4, with no added backstrap, I found that it has slightly smaller grip than the non Gen 4. The "medium" is the same size as the non-gen 4, and the large is about the same amount larger than the original than the no added backstrap is smaller. I never had a problem with the grip on the Gen 1 19, but I will probably carry the Gen 4 without any added backstraps.