Bob, you had a lot of "assume`s' in thoese shots!
Nice group tho...
The Hornaday calculator...a couple of years ago I took my 8x57 Rem classic to 600 using numbers I got from it. I was shooting 170grn SST`s. I believe it suggested 17 Mins. of come-up`s. Set a water jug, and hit it first shot. Actually had the shot on camera, and could watch the bullet go down range.
Some time it works some time not.
