Read Tea leaves, not primers. You will get better results.
Your primers look good, but judging pressures by primer appearance is not a reliable method.
The absolute most reliable signs of excessive pressure are gross phenomena, observed when pressures have exceeded max. That is leaking primers, pierced primers and blown primers. Another positive sign is stiff bolt lift.
Bolt lift cannot be observed in a semi auto, and you did not state what type of action you have. I only have AR15 type actions in .223. When I develop loads I do a couple of things, one of which I have never heard anyone else discuss.
Firstly I use a chronograph and shoot loads from low, working my way to the loads with the most powder. A chronograph is a most useful tool as it tells you when you are exceeding published velocities. It is a very safe bet that when you exceed published safe velocities, regardless of your powder charge, you are exceeding safe pressures. I have a couple of very tight Krieger barrels, these barrels produce velocities at least 200 fps faster than the same charges give in reloading manual barrels. Or in other match barrels. And the pressures are high as I have found by having pierced primers and blown primers. These fast barrels are tricky as slightly hot loads developed in them in cool weather can and do blow primers in hot weather. And what is worst, there is often no indication of a stiff bolt lift when the rifle is blowing primers. Just wham!, and you notice a coating of oil and grease on your shooting glasses. Always wear shooting glasses.
I have vintage military barrels that shoot abnormally slow (like 200 fps or more) compared to published velocities/loads, and I have not tried to increase velocity because I am not really certain what is going on. And I don’t want to pioneer with my head and heads into that unknown frontier. The more guns you blow up, the more cautious you tend to get.
Another factor that makes primer appearance unreliable is the fact that with dry cases the primer backs out to the bolt face before the case expands to the bolt face. Once the case expands to the bolt face the primer is stuffed back into its pocket. I suspect in many instances the primer has expanded to a muffin shape before getting stuffed back into the case. This will give the appearance of high pressure at times with light loads. I stated dry cases as when I am developing loads for my AR’s, I lubricate my test cases (with case lube) so the case will slide back onto the bolt face at approximately the same speed as the primer. I have no way to determine velocities, but I have noticed that with dry cases primers were flat, but with lubricated cases at the same powder charge, the primers were rounded. Obviously the combustion pressure did not change. When I have lubricated cases for load development, I have observed many times as I increased the powder charge, the primer edges went from round to less round, and then to flat. Or simply round to flat. But even with this technique I have had leaking primers when appearance would not indicate a maximum load. Generally the primers flatten out a grain or more before I have any noticeable pressure problems, so it give me an idea that I am starting to get close to a maximum pressure.
To reiterate, primer appearance is an unreliable indication of pressure. I think chronograph velocities are a better gross measurement technique, and the only real positive indication is leaking, pierced, or blown primers, of difficult bolt lift. If you ever reach that point , simply cut the load by ½ grain and try it out in the hottest weather you can shoot in. And if it blows again, cut the load by another half grain. And keep cutting until the primers stay in, and don’t leak. Wish there was a more exact way to do it, but I don’t own any pressure barrels.