BTW, Bugger, I should address the second half of your question about CRF actions. First off, I'll tell you my Springfield feeds slicker than owl snot out of the magazine.
But I learned a new fact about the '03 Springfield during this project. Unlike the Mauser and the CRF M70, the Springfield is designed to be able to single load and close the bolt over a cartridge being pushed ahead of the bolt. This is because in the early days when the '03 was fielded, the idea was soldiers would single feed each round while keeping the magazine full. This is what the magazine cut-off switch is all about. When the bad guys charged, then the switch would be pushed up to the vertical "ON" position and the soldier could run his magazine out and the keep loading it via stripper clips.

Cheers,
Rex