interesting never knew Winchester made rifles in 6MM, looking forward to pictures
any LA Featherweight can be rebarreled, and then ya have a 6mm Rem Featherweight.
I have an XTR Long Action featherweight with the factory laminate stock. When I got it, it had a 30/06 barrel on it., that was shot out. I got to know the former owner, and he told me when he sold it to the gun shop I bought it from, it was the 5th 06 barrel on it... It was new from the factory with an 06 barrel...
He was delighted, I have put a 6.5 x 55 barrel on it instead.
Another Model 70 LA, I put a 6.5 x 57 barrel on it, after dealing with some of the issues of a pushfeed 473 bolt face, with a lot of 6.5 x 55 brass. However Remington brass used a 473 bolt face on theirs...
6.5 x 57 is my favorite cartridge, followed by a 6mm Rem on a Long Action and fast twist ( which I have on a Model 700 LA), and then my 7 x 57 Model 70 Featherweight. A Roberts never came my way, with a price I thought it was worth...found some, but the seller wanted a gold mine for it, just due to the supposed rarity of it... If I wanted one that bad, an aftermarket barrel would have solved that problem for a lot less money.