Iam NOT a Rules Authority, but I believe Stevens 'Favorites', the 1894 or earlier series, are qualified, as stated in the Reply citing the General rules, for side matches. Being SINGLE SHOT designs they do Not have a 'Tubular Magazine' which seem sto be a requirement of Rifles used in Main Matches.
Just my understanding of what has been said already.
Best Regards,
Chev. William
PS: I also believe a 1890 Winchester, in .22WRF, would also be allowed in Side Matches. Chev. William