I've had some trouble with SWC's.
Sig P220, ~ 95% with SWC's, even after making OAL & crimp adjustments.
Glock 30, ~ 60% with plated SWC's, extraction issues.
1911, 100% with plated SWC's (never shot many lead ones)
HK USP .45, 100% with plated and jacketed SWC's.
200 grain TC's have been 100% in every gun I've tried.