The ram only locks in place if it's all the way to the back of the shaft and locking pin, if the ram wasn't in the correct position (all the way back, ie: in the position for the pin to from the bolt to drop into the groove in the ram) the breech wouldn't stay shut, it'd flap open again - no?I'm surprised no one mentioned to make sure that the pin on the bolt drops in to the groove in the ram properly (seem the manual).
I'm not preaching too you, that's just how I understand it to work, is that not right?