Q: Can you tell me if the Model 1895 Lee Navy straight-pull rifle was designed by the same guy who designed the Lee-Enfield? Also, did it use a semi-rimmed case similar to that of the later .220 Swift?
A: Yes, James Paris Lee who designed the action of the Lee- Enfield also designed the 6mm Lee Navy rifle made by Winchester under contract to the U.S Navy. But the Lee wasn’t exactly a straight-pull rifle, but rather a tilt-pull since it had a rectangular bolt that angled upward slightly as the bolt was pulled to the rear. Instead of rotating, lock-up was accomplished by a massive square “locking lug” on the bottom of the rectangular bolt dropping into a recess in the action. I’ve seen it described as an upside-down variation on the Savage 99’s lock- up. I believe that Swift brass can be necked up for the 6mm Lee Navy rifle with no other changes, so it is probably true that the Swift was based on the 6mm Lee case necked down.