Does seating depth a have this large impact on group size?

[Mikecr]

When you really dial in load for peak performance, it don't take much in seating change to collapse the whole thing.
Not always, some combinations are less sensitive. But I've seen enough to notice I don't get so lucky.. My best windows have been around .008" wide, and so I also verify every single round I load.

 

[HunterGreen]

When you really dial in load for peak performance, it don't take much in seating change to collapse the whole thing.
Not always, some combinations are less sensitive. But I've seen enough to notice I don't get so lucky.. My best windows have been around .008" wide, and so I also verify every single round I load.

Mike, how is your Dakota rifle season going ??
Did it start ??