I slugged my 91/30 barrel with a steel rod. Much cheaper than brass and it won't splinter like wood. Wood actually works for really short barrels like pistols which is why Hondo probably figured "if it worked for me the last 15 times, it should work this time"
I wrapped wide Mylar tape close to land diameter every 6-8 inches so the steel never touched the barrel. That way I could easily tap the rod with a hammer or mallet and not mess up a brass rod. Lots of lube in the barrel is also a good thing. My gun slugged at 0.313" so I cast my bullets to 0.315" and size them to 0.314". Using 0.312" cast bullets would be a leading disaster so slugging is really helpful.