cayugad

Dave I copied and overlapped the two dated pictures so that a closer look might be possible.

From my prospective - I am not concerned about the rust or condition of the cut edges - they in fact should rust long before the smooth bore finish. So when I look at the pics I am trying to evaluate the change in bore only. As you can see in your pics the amount of light in the upper picture is a little greater than the lower picture, so when you are reading your interpretation of the time lapse keep that in mind.

I really notseeing a lot of differences in bore conditionin each sample.