I noticed the same thing Beagle did.
Those bands on your HP's look heavily frosted and sunken. Unless my internet eyes fail me, I'd guess if you measured with a micrometer the bands would turn out to be subcaliber. Oftentimes these will be frosted and sunken on one side and not the other, showing irregularly shaped bands. Yours might be this way all the way around. If the band fillout is good on one side of the bullet and poor on the other you might have lopsided, unbalanced bullets.
Check that out first. The HP's look okay from what I can see, but admittedly there's no closeups.