I've heard from a friend of mine that the US Navy once (around 1900?) used a Lee-designed rifle, supposedly a straight pull and using a 6mm caliber cartridge.

Is this true, if so, was it a servicerifle or a prototype?

Does anyone have a good picture or drawing of it?

Or any other related info.

I was told this rifle was probably designed by the same mr. Lee who designed the double-column magazine. I can't find any solid data about this,

Any info is greatly appreciated,

Kind regards,

Vesi