If you read the Alliant "Notice" ,please check out the temperatures that caused this problem............OK so it is not good for a cold weather hunting load. Does that mean that at "Normal" temperatures at 50 degrees or more this powder is still "Unstable" and unsafe?
Was it just one case, maybe in a J or K frame ? It would be nice if they laid ALL the CARDS on the table with this story.

As for std or mag primers..............in all my bluedot loads ,you just have to see if your gun groups better with these primers at low or maximum loads,since my K and 686 will print at different points on target and also show different fps with the different loadings.

My best accuracy in my 686 with bluedot with cci500 primers comes with the 110 and 125jhp at 1288 to 1430, 140xtp target at 1250fps and the 158xtp at 1270fps with a maximum load. The heavier bullets from 140grs actually shoot better in my 6" guns and I very seldom shoot the lighter bullets,now.