Swede Mauser M96/M41b Sniper Rifle
Sweden had long recognized the value of snipers, and as World War 2 enveloped Europe, Sweden embarked on a mission to provide six standardized high-quality sniper rifles for every infantry company. Sweden had an extremely accurate infantry rifle in the M96. (See the M96 page for more details.) Sweden needed a source for military rifle telecopic sights. Germany produced military rifle telecopic sights. Germany needed iron ore. Sweden had the best iron ore in the world. A deal was made satisfying all these needs, resulting in the delivery in 1941 from Germany to Sweden of several thousand AJACK (Berlin) Army Telescopic Sights, along with scope carrying case, leather scope covers, scope mounting rings, scope mounting brackets, and cleaning kits (brush, cloth, etc.). The Swedes then collected and test-fired all their best M96 rifles, and of those tested, the very best shooters were disassembled, refurbished, bolt handles turned down, and rebuilt with the AJACK scope moounting brackets installed (a permanent modification). Scopes installed, zeroed, s/n'ed to match rifle (scope carrying case, too), and issued to the infantry, under the designation Model M41. Then in the mid-1950s, all the sniper rifles were recalled and rearsenaled, reblued, repolished, and the scopes rebuilt with coated optics. This changed the rifles to new designation M41b.
This particular "1941" M41b was originally a M96, made for Sweden in 1900 also, by Mauser at Oberndorf, Germany, the same year as our other "pure" Oberndorf Swede M96.
Once the rifle/scope is zeroed (elevation and windage are dead-on) at, say 100 yards, then the target distance adjustment of the elevation cross-hairs (the entire cross-bar and post move up and down) is accomplished by turning the small horizontal, bright steel dial. (A vertically knurled knob on top of the scope, between the rings. This knob has a locking screw at its forward edge. The lower portion of that locking screw is just barely covered by the strap of the lens covers.) For unknown distances then, a good-enough estimate can be derived by comparing a common shape such as a human torso or vehicle to its relative size in the scope cross-hairs (below). The view below is of the same reticle as the AJACK scope, but on a different rifle. Imagine if a target of a terrorist were standing in the porch entrance; you could immediately compare the centered distance of the target to the width between the two horizontal bars. If you knew the average terrorist target at 100 yards would only just barely touch each bar tip, i.e., just fill the center space within the area bar-end to bar-end; but this target only fills approximately one-half that gap, it is therefore roughly twice the distance, or 200 yards. And then you, after unlocking the lockscrew, adjust the distance dial to the 200 yard setting, relock the lock screw, and aim, ...fire.
Note that while we blithely mention ..."once the rifle/scope is zeroed...", we recognize the challenge of especially the windage adjustments, but also that once set, at any distance, the scope dismounts quickly for carriage or stowage, and returns to zero immediately upon installation back on its mated rifle. Further, it should be noted that any adjustments for windage in the field are expected to be of the Kentucky windage or hold-off style, due to the intricacies of the scope windage adjustments. The windage adjustments alluded to earlier as a 'challenge' are nonetheless rock-solid once properly established, and so facilitates the shooter's confidence in using either Kentucky windage or hold-off style to obtain on-the-spot windage adjustment.
And here's how this rifle shoots at various distances, using military surplus ammo, commercial ammo, and handloaded ammo, from a shooting bench, with the forestock resting on a sandbag.