Are there any ten round or more revolvers?
Smith and Wesson makes a 10-round .22 revolver and Uberti makes a 12-round .22 revolver.
As I read the NJ law -- I'm not a lawyer, but I can read English -- the Uberti would be legal because it's not semi-automatic.
Ruger has a GP100 in .22 cal.
10 rd. STAINLESS Beauty!