Having problems bumping the shoulder back!

The press I'm using is a RCBS junior 3 that I bought in 1976.

I have owned 2 Rock chuckers, gave one to my son. One I still
have. I like the Junior for the smaller mass of the press.

I think my press might out live me.

I like my bolt to need to be close and not fall shut.
 
Maybe do this - telephonically contact a company rep in whatever company your die is manufactured. Many years ago I called Redding and spoke with a tech relative to my Redding 30-06 FL die that wasn't resizing correctly, as I had to stand on my bolt handle to close the bolt on some cases.

The tech asked if I was camming over? I said nope, never had to do that before. He told me how to cam over and stated if that didn't work to send the die in for replacement. Camming over solved the problem. Just give the die an extra 1/4 turn or so after bringing the ram up to touch the bottom of the die.

I guess you could give your die a full turn and see just how strong your bench top is.

Why does it work? Why should you have to do this? Damned if I know, but it just might work for you.

Now that Redding Body Die DOES WORK - every time.
 
Maybe we're not all seeing/using "cam over" the same and that is causing some of you to have heart palpitations or hyperventilate.

I can't speak for others, but I, often, need a slight cam over to push the shoulder back. I'm not talking cam over where it takes three gorillas and a six foot cheater to cam over, but just a slight cam over. This is with both of my Redding presses, UltraMag and Big Boss.
 
Originally Posted By: AWSIf you need to grind a shell holder do to a minimum chamber. An easy way to do a nice job is to place a sheet of 80-100 grit emery cloth on a flat surface, counter top, piece of thick glass or metal and work the top of the shell holder in a circular motion and keep you micrometer handy to make sure you are taking material off evenly. It is easy to thin the shell holder too much at the mouth as there it has less material.

Drill press is next best thing to lathe for facing a few thousandths off a shell holder. Chucking shell holder in drill press on mandrel made from 1/4" machine bolt and using emery cloth on a flat surface as suggested above assures square surface (but saves elbow grease
smile.gif
).

Grind bolt head down so that it does not protrude above surface of shell holder to be faced:
49588486748_51be9e2ded.jpg


Chuck shell holder. Since mandrel shank is threaded, it is a good idea to chuck loosely then hold snug against the flat "anvil" surface while tightening chuck to assure it is square.
49588978421_0913a4567c.jpg

Drill press table can be used as anvil or flat surface clamped in vise as shown.
49588490973_9450c793d4.jpg


Regards,
hm
 
Good stuff here...Just another thought. The brass has to go somewhere in a full length sizer die and pulling the expander ball through makes it worse. This is why some reloaders use bushing dies or a collet die to minimize overworking the brass. Good Luck
 
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