Kerf
Member
Rather than hijack and distract in another thread topic, here’s a new thread.
I came across this quote from RC: “I would bet your sizing die is not screwed down all the way and 'bumping' over center at full ram travel.If it isn't, you are not pushing the shoulder back where it belongs.”
So, is “bumping over” normal operation; should it occur on every stroke?
I had a much used press that began “bumping over” and I assumed the press was worn out from use or abuse. (I think it was the only reloading press within a half days drive and there was always someone in there using it. Probably a couple hundred K on it.) I thought the pins in the linkage were shot or the head was sprung and stretching with each resizing. I never trusted that press after it began doing that and eventually used that as an excuse to buy a new press, or three.
I don’t think the presses I’m now using are bumping over, not really sure.
kerf
I came across this quote from RC: “I would bet your sizing die is not screwed down all the way and 'bumping' over center at full ram travel.If it isn't, you are not pushing the shoulder back where it belongs.”
So, is “bumping over” normal operation; should it occur on every stroke?
I had a much used press that began “bumping over” and I assumed the press was worn out from use or abuse. (I think it was the only reloading press within a half days drive and there was always someone in there using it. Probably a couple hundred K on it.) I thought the pins in the linkage were shot or the head was sprung and stretching with each resizing. I never trusted that press after it began doing that and eventually used that as an excuse to buy a new press, or three.
I don’t think the presses I’m now using are bumping over, not really sure.
kerf