I bought my first factory rifle, a Remington 7mm Express, in late 1979 and I bought 10 or 15 boxes of ammo. I had always been a shotgun gun before and had zero experience with a high-powered rifle. Long story short, 1st no one knew anything about a 7mm Express, but this thing was hot, I just wished I knew what I know today. I shot all the ammo up or almost all of it and then saw the recall from Remington. Yes, the bolt was heavy, sometimes really heavy, but again I had no idea what normal was, and eventually after breaking the handle on my RCBS reloader Jr., did I realize I had a problem. Those rounds were so hot that it swelled the chamber some, the brass was really hard to resize, and yes I had plenty of lube on them.
I sent the rifle back to Remington and all they did was set the shoulder back some, but that did zero for the oversized chamber. I sent it back and had the same results so I lived with it for a couple of decades before changing out the barrel.
So contact Hornady, you know there's a problem, and I wouldn't shoot it anymore unless you have a chrony to see what you're shootingIs