I suspect that Hornaday doesn't actually make their own brass, preferring to contract that job to outside vendors. If so, it's quite likely that quality varies from time to time according to which low cost vendor manufactures it. Therefore what someone experiences years, or even months ago may or may not be a good indication of what you might experience today with your particular cartridge brass.
Case in point is the reputation Federal has for making "soft" brass that will not withstand more than a couple cycles of hand loading. Federal deliberately uses "soft" brass for their FGGM .308 ammo, preferring it for the consistency it produces on the target.
Some will use this fact to "peanut butter" label all Federal Brass as soft, when in fact many of their other cases are quite hard and able to withstand dozens of hand load cycles. Their 223 cases are a good example of this.
I've got about 1000 Hornaday 6.5 CM once fired cases from factory ammo that I'm using for hand loads. I've seen no issue with primer pockets so far, and don't anticipate any as i've used it for several years. However I do anneal the necks from time to time.
One other fact often overlooked is that the SAAMI specifications for primer pockets and primers cups overlap to produce possible loose primers at the initial load stage. If you find your primers are inserting a bit too easily, try a different primer, or even a different lot of the same primer. Production dies do wear out, and the decision to change them may have more to do with costs and availability than quality.