rcmodel
Member in memoriam
Those collets can slip in the cap nut and release the grip on the case and allow the case & pressure to escape the hammer if a primer sets off the powder.
A standard press or Lee shell holder can't.
And the pressure can't escape through the flash hole fast enough to prevent the hammer from turning into a plastic pipe bomb.
Or so I'm told.
The other thing is what was said in post #22.
The collet gets tighter around the whole rim on impact and the grip on the rim gets greater & can't slip in the direction it is going.
A shell holder has a lot of up & down slop and is only gripping 1/2 the rim.
rc
A standard press or Lee shell holder can't.
And the pressure can't escape through the flash hole fast enough to prevent the hammer from turning into a plastic pipe bomb.
Or so I'm told.
The other thing is what was said in post #22.
The collet gets tighter around the whole rim on impact and the grip on the rim gets greater & can't slip in the direction it is going.
A shell holder has a lot of up & down slop and is only gripping 1/2 the rim.
rc