I experienced a problem with my Mauser 2000 in 7x57:
when loading more than 1 round, the bolt get stuck and sometimes the rounds jammed .
I solved this for my rifle by changing the original follower, which was made from brass, by a beautiful old steel follower from a swedish Mauser!
The swedish follower fits perfectly for the whole gun and also for the original Mauser 2000 magazine spring.
Now everything works smoothly and I'm totally happy with this rifle