For the Ross 1910
If you remove the bolt, it should snap back about 3/4 of an inch against the bolt body with a slight turn of the head, and you will have to pull and twist it to get it back in. The spring is fairly strong.
If you watch the head of the bolt from the rear of the action as you close it, you should be able to see the bolt head rotate into the locked position.
If it does not rotate, it's not assembled properly, and could kill you if you fire it.
Many Ross's were converted, with a rivet in the bolt to prevent it from being improperly assembled. That rivet will be clearly visible on the top center of the flat portion of your bolt if it has been done.
Mine has not been done. It's a 303, so ammo is no problem for me.
The action is immensely strong, and quite safe, if used by someone who understands it.