1903A4 rings and M84

[jmoore]

It should take a fair amount of force to turn the front ring in the first time. To keep from distorting the ring you really should have a close fitting dowel or length of bar stock to use as a lever. Most certainly don't use the scope! Can't give you a torque value, it's sort of an educated feel thing. But once the ring moves past the stopping place it should be smooth turning and possibly require a little less torque than it took to get past the initial "bump". If it's really worrying, take it to a trusted 'smith.