The "N" prefix Iver Johnson Safety Hammer guns date from 1905, and would have been made for smokeless powder.
I would not carry an IJ or H&R (or about any other gun of that vintage) not because of concern for the powder or the power but because the leaf springs frequently break. If faced with the need to use the gun, a broken hand spring could spoil your whole day.
I'll stick to my Model 19, Model 36 or my new 642, thank you.
Last edited by James K; December 15, 2009 at 11:44 PM.