If you are looking at a modern variant, take a look at some Norwegian sniper rifles.
Now this is what I can tell you about The K98k w/ 4x Zeiss Zeilvier scope and a Howa 1500 .308HB 22" barrel w/ a Sightron SII 3-12a42mmAO scope. Probably as close as you will get to the actual rifles.
1945 DOU K98k Semi Kreigs w/ an original Zeiss Zeilvier 4x #4 reticule scope, Low Turret bases (they are see through for iron sight use)
Howa .308HB M&P, 22" barrel, Sightron SII big sky 3-12x42mmAO.
Bullet performance. The 7.92(8mm) is not your everyday 8x57 ammo when it comes to dedicated ammo. A 196gr bullet w/ a MV of 2700fps was the norm.
147gr standard 7.92 fodder was accurate to 500 yards, but deflected to much from wind, angle after that, so it was a last resort or close shot. MV of the 147gr is 2900fps.
The scope is calibrated for the 196gr round. The elevation is actually in meters as the scope cam is set for the round. 100, 150, 200, 250 etc.
At 800 meters (the scopes max adjustment) that is 874 yards. The windage is set using the scope base. Once the scope is zeroed it comes down to the shooter to know what hold to use. The width of the post itself is often used as mil-dots on modern military scopes. W/ pretty much any ammo loaded to the specs of the era it is a Sub 2" shooter at 100 meters. Consider the fact it only has a standard military 3 step contour barrel that makes it deadly w/ any ammo of the time to 600 meters+. Forget head shots. 16" kill zone. 12" and less w/ quality ammo.
OK, now the Howa. I shoot lots of 147gr nato ammo. Not sniper grade by any means. It will shoot 1/2" ragged holes at 100 yards all day long. W/ 165gr or 168gr handloads it is stellar at distance. Using match grade handloads at 700 yards (640 Meters) it is easily a 12" shooter, but the scope takes more thought at distance.
The Mauser adjustments are visual, the Howa are feel. To return to zero, the Howa/ Sightron is more difficult.
With either, I would not want to be 800 yards from the muzzle. Quality tailored Ammo is key in both to extend range.