Shrinkage!! Barrel lengths on my MS are all over the place. The 1908 in 8x56 MS is 19.5 inches. My 1905 is 17.5 inches and my 1903 is 22.5 inches. I'll be taking her to the range to work up a nice accurate load for deer hunting.
I really would like to do some boar hunting in the future. Not so much for trophy but more for eating purposes.