Primer flow out to the edges of the pocket, extractor button imprint on the case head, pierced primers, primers falling out, case head separation with new, or properly resized once fired brass after firing are all considered worthy of consideration in this respect. But, if bolt lift isn't noticably resistant or stiff, it isn't always a high pressure situation.
As for your pcitures, I fail to see anything indicative of high pressures. Quite honestly, your pictures seem to do more to identify what a pocket and flash hole look like, but little else? In other words, what exactly are we supposed to be seeing?
For me, in my rifles, the primary factors by which I identify excessive pressures is-;
#1. stiff biolt when opening
#2. extractor button transfer marks, unless Remington brass or similar sift brass
#3. Primer flow completely out to the edges of the pocket. And this one is only because I use only one brand of primer that I have used for most of my 30+ yrs. of reloading, so I feel confident using this sign
#4 pierced primers, and again, because I know my primer brand. But I hav
e had as many as I can count on one hand the number that have gone that far over pressure ever.
#5. Unusually high fps over the chrony, but only if other supportive evidence as described above exists.
Now, as for the Barnes bullet you are usng, that bullet should be loaded using data specific to that bullet. But even when I've loaded using that bullet, I have rarely exsperienced more than just slightly higher pressures than with standard cup and core bullet data, but never anything I would consider excessive or over the top.
The single most idnentifiable pressure issue I experience with bottle neck, is the brass, which has been respoinsible for some exceiive pressures more than once over any other cause. It is when this happens once in a blue moon, that I know I inadvertantly let a piece of Frontier brass slip ny me unnoticed. This is also why I always sort and load bottle neck brass by head stamp, I don't mix bottle neck brass.
GS
