How many insulators can one fit in a 55 gallon drum? It took me over 4 hours to look through every stinkin' insulator in 27 barrels to find this lot. Almost all were 154 Tatums, 122.4 and 128 Pyrii, with a fair number of 155's of various makes. I am one sore dude from being bent over a barrel like that, and am not very happy with my obsession for these things right now!