Not a lot of conversation about such things today, but those ol' fellers knew how to dot the "I" and what it took to do it.
There's a bit of discussion about the Jurassic Era of shooting and a fair supply of photos as well, all to be found here:
http://wyomingschuetzenunion.com/One of my distant friends owns a .56 caliber put together by H.V. Perry. Weighs about 45# and launches 1,300 grains of lead (2 piece swagged) with 250 grains of Lord Black. Damn if it don't shoot well.