My 10-60 moves predictably at around 26 and 10. It's like a switch, goes fast and to the same amount. The warm shift is about 4 yds at 55 and probably a yard at 25. The cold shift is about 2.5 yds at 55.
Thats what I've discovered so far but I'm only getting to grips with the cold shift as its not been that cold here in winter for a few years.
BFTA/NSRA County Coach
CSFTA Chairman/BFTA Rep