I don't understand how you can tell that they penciled though if you don't recover the animal and open things up.
A valid point. Maybe a look a the video would help clear things up. If the hit was clearly to the mid-shoulder area - should've been a dead animal.
Over my hunting years (more than 35 years of experiences), I've recovered the following animals and documented non-expansion or very limited expansion on the following game/bullet/shot combinations - first hand. All three animals required follow-up killing shots.
Dall Sheep hit at 13 yds with a .280 RCBS Improved 150gr Nosler Ballistic Tip - drilled broadside center of the ribcage.
Black bear hit at 220 yds with a .338 Win Mag 200gr Nosler Ballistic Tip - hit slightly back and high from center of ribcage on a broadside shot.
Dall Sheep hit at 355 yds with a .300 Win Mag 210gr Berger Hunting VLD - hit mid-height toward back of ribcage on a broadside shot.
I don't normally post about bullet performance
on an animal I didn't recover. But I make this exception to my self-imposed guideline. I have very high confidence I had a 162gr Hornady A-max fail to expand on a black bear this past spring at a distance of 565 yds. Rifle was .280 RCBS Improved. Broadside shot. I had everything pre-arranged and ready to go and danged if this black bear didn't step into the very opening I had pre-arranged for and even set my scope turrets for. At the shot the bear was instantly on his rear legs looking for danger. Took two quick jumps. Stood on rear legs again and searched for danger. Then bounded into the alders. I waited more than two hours to see if the bear would show up in any other openings on the mountainside, I walked over to where the animal was at the time of the shot. Spent some time looking for evidence of a hit. Nothing. I then set a target on the trunk of a small tree. Walked back to where I'd shot from and took two shots. One shot hit 1" from my point of aim. The second shot hit 3" from my point of aim. After seeing the location of these hits on target, I spent another hour looking for evidence of a hit on the bear, and for the bear himself. Nothing. That bear never showed himself again from a distance of 565 yds during my close to three hours of observation - after the shot. In my experience, a miss on a bear at that distance - the animal isn't all too spooked and often will re-appear after 10-20 minutes. Sometimes they won't even run off on a clean miss.
Anyhow, my point is to substantiate the facts of life: bullets which have been designed/intended to expand can and do occasionally fail to expand even when impact velocities are much higher than the normally accepted and advertised minimum expansion velocities.
But to have two bullets fail to expand back to back? Never had that happen yet.