I've run into a small issue with my Model 70 EW. I modified the magazine to be able to use 3.000" + over all lengths but I don't feel that's the cause so far. I'm using the 142 Lehigh Controlled Chaos. For those who aren't familiar with them, they've got a pretty substantial hollow point (read WIDE). More than occasionally, the cartridge feeding from the left side (ejector side) will hit the extractor cut in the barrel and stop the bolt. I think I rectified the issue by bending the follower spring to put more pressure on the front. After this, feeding was perfect for the last half dozen tries. I guess my question is: are the follower springs different for the WSM rifles, maybe stronger? Or does anyone make an extra power spring? I think I might also scare up a long action follower and grind it to fit so I don't have the .200" gap between it and the mag box.