|
The roughness on the cases seems similar to what I sometimes see when cases are fired in very dirty chambers. When that happens, the small spots in the photo would be dents going into the case. But, it is also possible that what look like dents in the photo may actually be raised spots where the case metal was forced into pits in the cylinder wall. So, it would help if you told us if there are small raised spots or small dents.
What does strike me about those photos is the apparent angle in the case on the left. It appears that the case is square to the head up to the point where the roughness begins, then abruptly angles off to the right in the photo. But, the case does not seem to be over-expanded in the rough section. Comments from others?
SL1
|