<shrug> it's a "red flag" for me - meaning stop & evaluate what's going on. Bear in mind in the past 5 years I've seen 3 instances where reasonable loads produced excessive case expansion, without any other indicators of high pressure, so that's one reason I'll stick to CHE.
I look at a variety of factors to judge what to do with a load - speed, accuracy, case life. If all three are good, and the bullet is appropriate for the task at hand the load is a keeper.
