Just a note to those that may be interested. I shot the 45-90 BC at 300 yards this past weekend. BP loads, 535gr Lyman Postell. I had to set the ladder on 375 to get on target at 300 so when I get a load that groups well, I'm going to have to calibrate the ladder by changing the front globe to a lower one.
Ian
P.S. as an aside, I shot a 3/4-1" group at 300yds with my Savage 12FLVSS and Hornady's 75gr AMax, was quite proud of it. 3 shots in the group, a 4th pulled the group to 4".. I quite naturally threw that one out. :wink: