As an aside, my Zencar EVSE came with a 14-50P and I wired a 14-30R (on a 30A circuit). The EVSE is set to 24A and, with the neutral blade removed, the plug fits perfectly in the 14-30R, no hammer required
Obviously, you would never use an EVSE that draws more than 24A on a 14-30R.
AFAIK, that won't work with a 6-50R.
Vancouver, CA owner of a 2013 Ocean Blue SV + QC, purchased 01/2017 in WA
Zencar 12/20/24/30A L1/L2 portable EVSE
1-1/4" Curt #11396 hitch
After market, DIY LED DRLs
LeafSpy Pro + Konnwei KW902 ELM327 BT OBDII dongle
Loving my first BEV