Gus, assuming everything is working properly,ejection should be controlled by how smartly you move the bolt to the rear.
We've become a nation of BR shooters so lots of times we sit and move the bolts sedately while sitting at a bench,so ejection will be less spirited; but M70's (like any good CRF) were meant to be run hard and if it's working properly should toss a case across the room in rapid fire as you move the bolt smartly and hard to the rear.
If it isn't doing this you may have some debris in the slot that houses the ejector.
Whip that bolt back like you want to break it(you never will)...it should eject fine
