Press question

saum2 · Post by **saum2** » Fri Oct 12, 2012 2:06 pm

Should the shaft on the loading press have any movement when at the top position?
ie (when the lever is pulled down)
If so, how much is too much?
Geoff

johnk · Post by **johnk** » Fri Oct 12, 2012 2:27 pm

Depends.

In an ideal world, a ram that runs exactly coaxially with the perfectly cut die hole which contains a gem of manufacture die could be expected to give the ultimate outcome. On the other hand, dies locked down with O rings Lee-style can accommodate a fair degree of mutual slop with a ram & threaded top.

Be guided by the output. If the round is straight & shoots true, what the hell?

John

saum2 · Post by **saum2** » Fri Oct 12, 2012 3:26 pm

If excessive run out is a problem then is it the ram with movement or the dies not being seated into the top of the press truely. surely you cannot have both ram with movement & dies with rubber "o" rings to compensate.
excessive run out for me = .003' - .0010" shell holder is clean.
Geoff

johnk · Post by **johnk** » Fri Oct 12, 2012 3:36 pm

I've found that virtually all the runout I got with a press could be tracked back to my case prep procedure. The cases came out of the PSECO chamber fine & were being buggered up by the lack of accommodation of my equipment. These days I usually use Lee collet dies, but even my Redding comp dies stopped misbehaving when I pitched the Redding lock ring & fitted a Lee.