Gene/ I obviously didn't choose my wording right in my last comment.When I stated if you have loose primer pockets, you have measurable expansion. With a six digit mic., you have measurable expansion all the way up to and including that point. The point I was trying to make, was that if you have a dangerous load of 80000#, you should think there would be a loose primer pocket, therefore measurable expansion. Give it a whirl. If you prove me wrong I will apoligize<BR>to everyone here, and take the campsite off my favorites list. Over and Out