H&R Inc did with the Model 258 Handy Gun II combo and the Model 158 Topper combo, both on cast iron frames, H&R Inc never made any steel frames, SB1 cast iron and SB2 steel frames didn't happen until 1987 when NEF started making them, H&R Inc went out of business in 1986, see the H&R timeline in the FAQs or in the H&R Misc forum. NEF and H&R1871 have made lots of rifle/shotgun combos, but I don't recollect any with 30-30, but they may have. The only cast iron SB1 combos that I know of are/were the 357ga/20ga and 44mag/12ga combos they offered in 2008.
Tim