Of the standard non sniper bolts some handles are swept back with an angle similar to a Model 70 bolt handle, others come straight down. Not sure but I think the swept bolt was an early feature.
The Marine Corp used 03A1 rifles (possibly some 03 as well) fitted with an Unertal target scope (8X?), a very long scope with shock absorbing mountings. Some of these were still around during the Vietnam war.
The Marine Corp sniper rifles were far more accurate, perhaps the most accurate rifle of the war, but the shock/recoil absorbing spring loaded mounts were prone to damage and becoming fouled by sand or other debris and not returning to the set position. They had to be kept scrupulously clean. Later they locked out the movement entirely making it a solid mount.