That is an awesome story PJ!
I think I already posted this a couple of years ago, but I'm to the age that it's acceptable to tell the same stories over and over.
I have a'66 Sporting Rifle and I regulated the sights. I cast a 220 gr. RNFP and worked up loads with Unique, Herco and Swiss 3F all three running just a smidge over 1300 fps. Ladder down, is for 100 yds., ladder up with the sight all the way down is for 200 yds., slide the rear sight up just past the 300 yd. mark on the ladder, and it's on at 300.
I don't have a bench for shooting at 300, so I had to shoot prone with the barrel supported and the buttstock unsupported. Still not bad groups! (The black center is 18")
The load of Swiss 3F is a really accurate load, but I have to shoot 300 facing west, and our prevailing winds are from the south, so by the time I got to the BP loads, a little breeze had picked up and was blowing the bullets to the right. Fun stuff though!!
CHT