I've polished/stoned and re-sprung lotsa them. Have some RB and DT's both,upon various 77/22 receiver sizes.
I'd clip coils in a heartbeat.
Hint.................
Only a bubba would clip coils on the M77... You should know better than that, Stick.. There's 2-3 different ways to make the M77 trigger very good compared to factory..
Hint................