Where I grew up, on the northern plains, the older men used to tell me that cattle had to be mature to make good leather. I remember when most of the cattle in the Nebraska Sandhills, South of I-90 in South Dakota and a lot of Eastern Wyoming went to the feedlot as long yearling cattle. I even remember when a few outfits run big steers (long two year olds). Cattle were fed longer, most of them were of strong hereford influence. There were no implants and few or no chemicals fed to these cattle. I also suspect the tanning process was different then.
A lot of people ate their own grass fat cattle back then. They were often close to 3 years old and BIG. Hides brought $2.50. Maybe fed a little grain for a month or two. I doubt most consumers would eat it today. In fact, I bought a quarter of beef a couple of years ago like that, I loved it but most of my guests thought it was less than good.
I get disquested with fat wrinkles in leather these days and the fact they run off more than they used to. I also get some really good hides. I think most of our suppliers do a good job with what they have to work with. I guess most things change over time and we will adjust or just Quit. A few thoughts, Ken