It's been my experience that dust can cause problems with most bolt actions including the true 98's.
Last year a client had trouble with an Obendorf 10.75 X 68 where it gave problems with ejection due to dust. (Cape York)
I've also seen a Sako push feed rifle where it was almost impossible to move the bolt in the receiver due to minimum clearance and a bit of dust. (Far West Queensland)

I'm all for controlled round feed actions for DG but, both CRF and non-CRF actions are capable of stuffing the feed up if something is not set up right.
If I had to go after something big, nasty, and wounded, I'd want the rifle that feeds extracts and ejects perfectly regardless of weather it was crf or not!
Actually I'd rather have a true controlled feed which is of course a double rifle!