Trust me, the OP and many, many others including Lee Precision themselves, the Federal primers are still dangerous on the LEE 1000! When I was a newbie at reloading I put 100 times more force getting other brands of primers to seat compared to the force I used yesterday. None of those primers went off.
I did this hundreds of times in the past if not over a thousand. This was the first time I had to do this with the Federals and the first time I ever had a primer go off. When I am talking a little extra force it means a couple of inch pounds not pounds of force.
Anyone who uses the Lee 1000 knows that when the casings get primed you barely feel the pressure required to seat the primer. I have a hand chamfering tool for military brass and
it doesn't always open the pockets up as big as factory but enough to get the primers in. You can't tell me that the first time I try this with Federal it was just coincidence? Especially after the person selling them to me said they did this three times in his Dillon.
Anyway, I just don't want you to be one of those people I listened to who told me don't worry, just use Federal. It's not worth it.
I don't want newbies to get hurt! Please I have no endorsements from any primer company!

Don't use Federal primers in the Lee Pro 1000!