
I've done this probably hundreds of times in my original when swapping between primer sizes without a problem, certainly didn't over tighten it!!.
Emailed RCBS asking about replacement parts and a couple of other bits that were wearing on my original after 10 years use. Got up next morning to find a reply saying replacement product would be sent, allow 2 months for International delivery!,
9 days later they arrived in the post, both hand primers now functioning perfectly and I no longer need to swap bits to change primer sizes

Well done RCBS, excellent service
