The Scud 911:
I've been looking for an information about accuracy of VORs. I believe that the accuracy is +/-1° which gives 1NM accuracy 60NM from the station, but I also found some other things on the web.
FAA uses +/- 4.5 degrees for along track total system error including FTE (pilot error). +/- 3.6 degrees cross-track error because there is no FTE in cross-track; i.e., using a cross radial for a fix.
The PANS-OPS numbers are more conservative: 5.2 along track and 4.5 across track.