RE: How long will cases last?
You might see some flyers after 4 loadings now as the necks start to get little brittle.Also note hard extraction after 3 firings. I myself would partial FL size next you might have trouble getting the brass out of your gun. Maybe not.
I started annealing my necks after 3 loadings. And on the 5 or 6 load, I usually toss.