Please move this if in the wrong section.
This seems to come up with monotonous regularity and answers range far and wide.
I have always just knocked the primer out in the loading operration and have never, ever had a problem over decades of reloading. When I have reported this, I get all sorts of warnings, etc.
Well, the other day I was gifted 200x 270Win rounds in old packets. One packet was in fair condition and they definitely looked like factory loads, so I gave them to a friend who is a cartridge collector.
The rest were confusing, most looked new, some definitely reloads. All were very cruddy looking, but no verdigris. I pulled them apart using my 1981 vintage Kinetics Bullet Pulling hammer (te rubber band broke this year, so I used the shellholder, which is easier to use than the rubber band anyway).
The powder went on the roses and was watered in well.
Using the Lee Decapping Die, Safety Glasses, the 180 primers were knocked out on my (also 1981 vintage) RCBS Rokchucker.
None went off, which is what I expected. Sorry to disappoint all of the nervous nellies (of which there doesn't seem to be many on this forum.