Are they both 7X57's? The reason I ask is because I have a Mark X Mauser that was converted to7X57 from 30.06 and it does the same thing. However, dummy 7X57 rounds loaded into my M70 270 Classic do not slide around.
Yes, both 7x57. The Mauser is a Zastava (same as Mark X/Daly/etc) and the other is a M70 of new (SC) manufacture. My Montana Rifle Company ASR (7x57) doesn't do this, nor does an older M70 FWT (pushfeed). I may just put a strip of duct tape on the follower to keep the cartridges from sliding around. As I said, they all feed flawlessly; this is just more of an annoyance than anything.