Yes, I hand prime all my cases that are run thru a single stage press. One good press on the priming tool, rotate case and press again. May seem like an extreme crush fit to some but no failures and 450's seem to add in a part to my low sd's.
Sucks they aren't working out... maybe get a hold of cci and see what they say.
For reference I guess this what I got..still working on old dark blue boxes. Surgeon 591, Rem 700 and 2 dif lowers. TT diamonds on bolt actions. CE on one ar and a 667s on the other..
Wow...I've been using 450 for so many years I can't remember now. I don't have any more lrp cartridges anymore by my own choosing. All the cartridges I load for are srp exclusively 450. Including the 1000's upon 1000's ran thru the 1050 for .223
Never had a single cci 450 primer not go off...
I picked up a Leupy 2800 to replace and old, old Leica. It has an easier time pinging targets when compared side to side with my buddies particular 2200mr. I was able to hit some plates at over 1k so it's working out good so far.