Finally watched it. Yes, I see a small flash on #4. Had to back it up a couple times, but when he finally gets that round out it just barely rolls out over his shooting hand. Hard to see, but it looks like an empty case to me. Immediately after that, he ejects another round and it drops right out.
This is why I don't watch a lot of videos. Training or not, it doesn't seem right trying to slam the slide forward with your hand. If it ain't going forward STOP. There's an issue. Either squib or to long OAL. Just my opinion anyways.
Earlier I couldn't see the vid, so I took a guess at using grease instead of oil on the slide in cold weather. I really need to quit guessing and watch the video first. [emoji17][emoji17]