If it does not work would de-priming on the press be best or shooting off through the rifle ??
...Is it possible to resize them without pushing the new primers out ???....
Philip. Yes, if you have a die that allows the expander ball and spindle to be removed. I have full length resized primed brass when I made the transition from one 260 to another with a slightly shorter chamber (~4 thou). In both my Forster and Hornady dies the central spindle can be removed completely. To be honest, it did take Muir to prompt me that this was possible.
I have since done it again when I found some necks with insufficient tension while loading. I took the batch to bits, recovered the powder and ran them through the full length bushing die with the next bushing down.
Regards JCS
Folks,
I have been given some cleaned and trimmed cases with new primers in place !
Is it possible to resize them without pushing the new primers out ???
Cheers + ATVB
Philip
You can remove the primer pin from your resizing die but from what I've heard it's not really to be recommended. The air pressure build up might force the primer out (less of an issue if only neck sizing?). Plus there is the chance of resizing lubricant contaminating the primer.
Also, if you do do it (as you should with all reloading stages where 'live' components are concerned) wear safety glasses!
Alex
To return to the question. As this doesn't give all the facts it's attracted some puzzling answers.
Although Philip doesn't say so, I'm assuming that these cases haven't been resized enough to chamber in his rifle.... so he wants to tweak them until they do. Nor has he said anything about the necks not being sized... or they surely wouldn't have been primed?
If in fact they do chamber the obvious answer is to fire the empty cases, then reprime them. If the decapping pin is extended to just ping out the spent primer these cases won't be resized at all apart from (possibly) the necks. There's usually enough adjustment to avoid this .... so no lubing .... no powder contamination ... job done.
If they don't chamber the only solution is to back up (retract) the decapping/expanding pin (no need to remove it or... heaven forbid... grind off the fixed pin found in Lee dies) and resize the oversize cases right down to the shell holder without faffing about. The advice to remove it leaves you with necks too tight to accept a bullet so the neck will have to be sized and resized again anyway. That's unavoidable.
Attempting to remove live primers in situ is not a good idea as the anvil assembly and styphnate underneath is compressed in doing so. You have a live cartridge here in what amounts to a 'monkey metal' rifle chamber.I have done this a few times to deactivate rare cartridge cases but only after soaking the embedded primer in WD40 for 24 hours to be safe.
If you remove the pin assembly where would the air pressure come from??
I have done this many times. Remove the PIN from the RCBS type expander and have at it. Be careful with the lube as was mentioned. With the Lee FL unit, simply loosen the collet that holds the rod in place and slied it up a tad so the pin doesn't enter the flash hole and tighten.~Muir