"cam-over" what does it mean?!

On your press it means no more travel of the ram for the travel of the handle. Going over-centre if you will, toggling over you might say.
 
As you thread the die into the press, it goes lower towards the ram.
As the ram comes upwards as you push down on the handle, it will eventually contact the bottom of the die if the die is screwed in enough.
By setting the die to just the right height, the handle "cams over" and you feel a slight resistance as the ram and the die contact.
If the die is set higher it will not contact, and any lower and it jams tight and does not cam over.
 
This may be usefull...

Nockenwelle_ani.gif


http://en.wikipedia.org/wiki/Cam
 
If you have a Lee Challenger you cannot cam it over.

If you have an RCBS press you can. If you set your die to touch the shellholder with the handle all the way down, move the press handle to the up position and screw in the die another 1/8th to 1/4 turn, lock the die in place. If you bring the handle down so that the shellholder agian meets the die, it will take a bit more force to get the handle all the way down.

This is the "Cam Over", or best I can explain it anyways.
 
I basically knew this already but I'm glad my suspicions have been confirmed, thanks a lot for the great info! Now is there anytime I should be "caming-over" during the reloading process? Anytime it is particularly beneficial? And can it be bad for your press/dies?
 
mlebler said:
I basically knew this already but I'm glad my suspicions have been confirmed, thanks a lot for the great info! Now is there anytime I should be "caming-over" during the reloading process? Anytime it is particularly beneficial? And can it be bad for your press/dies?
Click to expand...

My instructions with my carbide dies advise against caming over as the carbide is brittle and may break if you press the shell holder too hard into it. Check the setup instructions with your dies.
 
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