@louu
Had the same thoughts you did when I first got mine. But then I read on here where users were putting their shooting hand thumb on top of the rear of the bolt when opening as counter-force since it's a "cock on opening" design. Between that and the feel like the bolt wants to close itself... it's easier to stay on target during cycling. I have since adopted the "thumb on rear of bolt when opening" with all my rifles and do it without thinking.
Also, my MDT metal mags run smooth (ACC Chasis). The polymer mags need a little more push on the bolt. I can see slight rub marks on the tops of the mag feed lips. I COULD file them down a tad or play with the mag catch , but everything feeds, so I let it be.
I apologize if you already knew this. Just trying to help and maybe other folks will see this if they have questions.
Still love my Tikka.
Will