Hornady black 105 hpbt swipes

[CZ527 Guy]

I had recently watched a youtube video where the OP was experiencing this with the same ammo roughly 6 months back, in one rifle and not w another rifle. OP tried seating bullet .02" deeper I believe. Increasing the jump to the lands cleared up the pressure as well as improved accuracy as I recall, in that instance.

Distance to the lands vary between rifles to some extent. Your milage may vary.