At one time I had a very nice M-1910 sporter in .280 Ross, it was a well made rifle of both workmanship and materials. I experimented with removing and taking the bolt apart in a attempt to put it together wrong. What I found out and no one who writes about these says is "All you have to do if you have the bolt out is when you replace it in the rifle LOOK DOWN and you can clearly see the bolt rotate into battery. If you did it wrong it will not rotate.

MP Sadly Deceased as of 2/17/2014