Bro, you are missing my point. I am in no way arguing that the AMP is not better than flame. More accurate more precise, but also MORE money.
All I’m saying is, that for us poors, the flame WILL work.
The rifle that shot that group has over 800 written record rounds through it. I have used the same flame method from its new build until recently and it still shoots those same groups. SD in the single digits.
I would argue that annealing , while part of the equation for low SD is not the ONLY component to that end. It also factors in powder used,primers, bullets, etc.
I will also concede the point that small groups at 100 yds to not give a proven indication of performance of said load to 1000 and beyond (high SD will indicate long range performance at distance). I would also proffer that high SD loads
generally will not produce small groups.
Bottom line is that while all you say is correct, flame annealing has a place in the total equation of reloading for some of us.
Now I will go be poor somewhere else…..