Well a couple weeks ago I took my witness 10mm to the range to sight it in after replacing the factory front sight with a fiber dot sight. I looked at the brass the other day and found a curious phenominon on the primers. There were nice firing pin strikes but it looked as if the brass was being ejected while the firing pin was still out because the indents have a scrape that makes the firing pin marks look like a tear drop. I test fired some hand loads that are a little hotter than factory loads and some factory loads while at the range and with the hotter loads the issue is more pronounced than with the factory loads. OK here is my question, is this a timming issue? I replaced the factory spring for a more stout one but not the firing pin spring. Should I dig out the firing pin spring that came with the new recoil spring and replace the factory firing pin spring as well to solve this issue?