Ross M1910 Pump Action conversion

[Sunray]

"...the unique craftsmanship..." I'll say. Really well done too. I'm guessing it was done for use out of a blind. Long eye relief scope with a very short butt stock would work well when sitting. Might have been for a wheel chair bound shooter/hunter.
There was a 6.5 x 57 Mauser. And a 6.3 X 53R R/K FINNISH. Be easier to convert/rebarrel one rimmed cartridge to another. Although there was a rimmed 6.5 x 57 too. Listed here under European Sporting Rifle. Warning: This site can keep you busy for hours. snicker.
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[Surpmil]

9.3x57 I would guess.

[Promo]

There is no need to guess since it clearly is marked and papered as 6.3 x 57. Thanks for the link, might indeed be a hybrid of different cartridges.

[Surpmil]

Whatever.

Anyone else notice that the sight bridge is a complete replacement somewhat different from the original? A very carefully machined one too.

[Bruce_in_Oz]

6.3 is close to 6.35 which is metric .250"

How about a case based on the 7.92 x 57R, as used in a lot of single-shot arms, doubles and Drillings, necked down? After all, there were lots of variants on the rimless version.

However to work in a Ross-length magazine and to also be rimmed, could it not be another variant of the classic .25-.303 as used extensively in Australia and in different versions, in Canada? A "raw" .303 case is 56.44mm; so, close enough.

[vykkagur]

As a newly-joined member, I keep coming across these old threads that capture my interest. I can't help but ask for an update. Did you solve the ammo riddle? Have you fired this piece yet?
For my own part, I side with the general consensus already offered: The workmanship looks to be excellent, the form is of such unprepossessing ugliness, that it must have a great purpose, because necessity is the mother of invention - and only a mother could find this weapon attractive!

[Promo]

No I still have that rifle. If you want to solve it and want to go through the hassle of importing it to Canada, I'd be willing to sell it.

[vykkagur]

And I'd love to buy it. It's a Ross, it's an oddball, it exhibits excellent workmanship, and it offers a mystery to boot. This festering boil would be a great fit in my collection. The hassle of importing into Canada wouldn't put me off a bit - I love a challenge. What IS insurmountable is the restrictive system of firearm ownership in our country these days. Buying federally-sanctioned dope from provincially-run drug dealerships is easy. Buying a firearm borders on a criminal act. Our current permit system has morphed into a de-facto long-gun registry, and I refuse to allow mine to be registered, so I no longer acquire complete weapons. I accumulate parts only. Otherwise, I'd jump at the chance, trust me.

[NORTHOF60]

So the beast has resurfaced. She screams for a Schuetzen hook style butt plate for completion.

[browningautorifle]

a Schuetzen hook style butt plate

I think that would complete it too. Looks right as the butt is square. I wonder if there's screw holes there?