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Well the one LHO had had seen better days. The scope mount was marginal and well outside the barrel center. However, Posner says that in testing it was very accurate, I have never found out if that was from a bench rest or not. LHO probably used the window stool as a rest, but some say the angle is wrong. The day I visited the museum they wouldn't let me kneel down at the window to see for myself.

From WIKI:

6.5 x 52 mm Italian Mannlicher-Carcano M91/38 bolt-action rifle with a six-round magazine Serial number C2766 Western Cartridge Co. ammunition with a 160 grain (10.37 g) round nose bullet Side-mounted Ordnance Optics 4 x 18 telescopic sight

No slouch of a round in that weapon though.

Found the following sometime ago. Have heard guys argue these points endlessly.

The M1891 Paraviccini-Carcano rifle, often misleadingly referred to as the Mannlicher-Carcano, has been adopted by the Italian army in 1891, along with the rimless 6.5x52 mm ammunition. The rifle was developed by the team, led by M. Carcano, under supervision of the government commission, led by the general Paraviccini, at Terni state arsenal. Name of the Ferdinand Ritter Von Mannlicher, noted Austrian arms designer, is often used in conjunction with this rifle because M91 uses modified Mannlicher-type magazine with en bloc clip. All other features of Italian rifle are quite different from Mannlicher designs. M91 rifle was available in several modifications, including long infantry rifle (Fucile di Fanteria Mo.1891), short cavalry carbine (Moschetto Mo.91 da Cavalleria, adopted in 1893), and carbine for special troops (Moschetto per Truppe Speciali Mo.91, or M91TS in short, adopted in 1897). These rifles served as a standard with Italian army until 1938, when it was decided to replace 6.5x52 ammunition with more powerful 7.35x52 ammunition, based on the recent experience in North Africa. New pattern of the short Carcano rifle, adopted in 1938 as M38, was technically similar to M91 rifle, but had shorter barrel length, chambered for 7.35mm ammunition, and had fixed rear sights, set to 300 meters range. Since 1938, many of the 6.5mm M91 long rifles were shortened to the M38 length, which was much more convenient to carry and maneuver. With the outbreak of the Second World war Italy was unable to supply enough 7.35mm weapons and ammunition, so, in 1940, it was decided to return back to the 6.5x52 ammunition as a standard. Consequently, many of 7.35mm M38 rifles were rebarelled to the 6.5mm. Some of the M38 rifles, issued to the African corps, also were chambered for the German 7.92x57 Mauser ammunition.

All in all I'll stick with my Sakos.