Ignition is more than just primers, think of it as the whole package from fpin fall and spring weight to internal drag all the way to primers quality, consistentcy of depth or flash holes etc. all working together to ignite a cartridge full of powder.
That's subjective IMO
Okay, all that makes sense.
But how do you make adjustments/corrections to "the whole package" without knowing the what or why?
Think of it like this.
I was a mechanic from the late 70's to the early 90's. I worked on everything and anything. From lawnmowers to Rolls Royce's to Lamborghini's to chainsaws.
In regards to automobiles, in particular to "classics", people would bring their cars in for tune ups.
I would spend a fair amount of time doing diagnostics and determine where to start.
I would use the latest tools of the time but the most important tool I had was experience.
With these tools I was almost always successful in tuning the car to proper running condition, barring any mechanical issue such as a flat cam lobe, damaged valve, or just a plain ole worn out engine. Issues such as those were fixable but took time and money.
So back to issues with this hobby.
I got a chronograph, now what?
How do I go about diagnosing the cause and then fixing it?
I kinda figure the numbers I got weren't ideal. What do I do about that?
Adding all the numbers from 200 rounds and averaging them, I come to a total of 2651fps average. (I did 40-5 shot groups)
According to my reloading books, I'm about in the middle of the specs.
.308 bolt action Savage 26" barrel, 168gr. HPBT/FMJBT