This one is a Danzig 1917.
Rock and roll....
"With the beginning of WW-I the annoying habit of front half of receiver & barrel departing the rear got some attention, and both Prussian Imperial arsenals- Erfurt and Danzig, slowly reduced the clearance,
finally getting a wheel cutter in there so as to reduce the clearance diameter."
Be interesting if you could get the year.
I'd rather have a 257 Roberts than a 243 Win, any day. The 98 was made for that case, the length, and taper. And it's lower pressure.