So AGAIN for the two of you that apparently suffer the ability to comprehend anything. It wasn't about TWO different IMPROVED versions, it was about the AI (Ackley Improved) having a 40 degree shoulder.
I was the guy saying you could neck up 30 degree shoulder brass and use it in a 40 degree chamber, no fireforming needed.
I wasn't the one that said the 250AI can have 2 different shoulder angles, that was your BFF again. The ACKLEY IMPROVED, has a 40 degree shoulder.
I'm sure this will befuddle you even more, so just drink a can of Ensure and take a nap.
What is it your time of the month? He thought the Ackley came in both 28 & 40 angles. Instead being a b!tch by saying only he was wrong, maybe you should pointed out (so others reading this thread might also understand) that even though there is a 28° version 250 Improved, it isn't considered an Ackley. Or is it because you had no clue about the 28° Improved version?