I agree with Butlers Rangers - the magazine cut-off has nothing to do with the cartridge feeding problem you're describing. The Krag was designed for round nose bullets and most spitzers don't feed very well. Some Krags will feed better and some will eject better than others. What type of ammo do you have that isn't working? W-W loaded a 180 gr. Power Point spitzer that didn't feed well at all. I don't know if W-W loads 30-40 at all anymore but they loaded a 180 gr. round nose power point at one time that was probably the best feeding factory ammo available. The Remington 180 gr. CoreLokt is definitely still available and has a spitzer type bullet but works better than the W-W spitzer did. It still catches at the chamber mouth some but won't deform the tip so much when it happens. Working the bolt faster sometimes reduces the occurrence. Any handloaded round nose will not catch and if I wanted to load a spitzer, I'd try a Speer Grand Slam, which has a more rounded ogive than the average. Again, the only thing thing the magazine cut-off should do is allow or prevent cartidges in the magazine from coming up to the bolt.