$50 says the answer is no, any takers?
I have done this several times, as recently as last month. I do not do it on a press, but using the Lee Hand Priming Tool. The "anvil" of which is a flat surface just slightly smaller in diameter than the primer. I have primed thousands of rounds of empty brass with it, and the possibility that I could set off a primer with that tool is so close to zero, that I'm quite comfortable using it myself on loaded rounds and advising others to do the same according to the instructions that come with the tool and due care.
Please tell me how that tool could possibly set off a primer already very close to fully seated?
I would just load it and shoot it. Chambering the round would probably seat the primer further.
Might not be a high probability but with a loaded round I don't take chances on a "slight chance" The scenario that I envision having a partially seated primer detonating is if a kernel or two powder enters the space left open by the unseated primer through the flash hole. When the primer is completely seated the anvil is "moved" possibly enough to break the foil and scratch the fulminate as a match would, this is all it would take to light the fulminate.
Like I said not a big possibility but I have had primers go off unexpectedly in presses without any powder involved...absolutely do not want any possibility of it with powder involved, with me sitting beside it in my gunroom.
To each his own, but I would never seat a primer deeper in a loaded cartridge.
I fully respect the experienced reloaders here who are doing this, but each person sets his own safety standards and mine are just do not fool around with a primer on a loaded round.
I have set off primers on the kitchen table with the original Lee hand tool and I know of primers set off when being crushed in a priming press.
I just do not want to see the results of a primer going off in a loaded round in my press.
I find this strange for me to be telling you guys to be careful of such things, because it is usually me telling some reloaders that they are scared of their shadow, or some such thing, about being so super careful about things where really no potential hazard exists.
The primers I've seated deeper had to be moved a max of 10 thou - from slightly proud to slightly inset. I've heard the warnings, but my informed decision is to keep doing that if I ever need to, and if asked, I'll continue to suggest to others that it's safe to do.
Like just about every discussion like this, there are those who will always "take the long road", because it's "safer".
That's great, but if anyone's risk tolerance is zero, then the shooting sports is not for them.



























