Have lost some faith in the 8 round Wilsons. Failure to feed on handloads slightly shorter than normal OAL. 7 rounders didn't have that problem. Spring is definitely tired after staying loaded for 1+ years, fully stoked, contrary to what all internet experts would tell me.
That said, it was a combination of problems:
1) handloads out of spec
2) dirty mags
3) weakened spring
Switched back to 7 rounders for Home Defense and we fixed the load issues - 8 rounders work again, but I definitely need new springs and to clean these out. Follower will stick down sometimes when pressed down on unloaded mag.