I'm looking at a #1 that was converted by someone in upper Michigan 8-10 yeas ago. The current owner says that it was originally a 30-06. It now has a Lilja stainless match barrel.
The rifle hasn't been shot yet.

Many thanks for any information, or ideas.
Dave Newell
BPCRDave 

Always puzzles me when someone has major work done to a nice gun, then never shoots it. I've seen this on more than a few occasions, and wondered why? I'm usually out as soon as the work is done to shoot it and work up loads for CF, or find what .22RF ammo it likes best.

I was converting the Ruger No. 1 to rimfire about that time. I'm in SE Michigan. I don't remember using a Lilja barrel but could have. If I installed a new barrel as opposed to installing a liner, I would have put my name on the barrel. Was there any other work done?

Got to see the rifle today. Slim now remembers the barrel to be a Shilen with a Lilja chamber. I looked under the forearm but couldn't find a gunsmith identification. Attached it a image of the 22lr caliber mark on the barrel. There could be a gunsmith under the front hanger plate?

When ever there is talk of converting Martini's from rimfire to centerfire and vice versa among Americans, there is talk of offsetting striker nose or the bore to accommodate the change. 

While working in South Africa I met man in Pietermaritzburg who had worked for  BSA in UK on the little Martinis.  (Pere Breslin?)   

He scoffed at the American school of Martini say we pretty much do everything wrong on the  Martini.   

He explained when the Martin was built they simply filed in the top of the horns of the lever to position the striker impact for center fire or rimfire.  Before that the actions were all the same. 

Similar for load position, cut the web between horns to position for loading the appropriate cartridge.

This discussion on converting Ruger N0. 1 comes up a lot.  I have wondered why Ruger has never offered this an option.   

Can the position/height of the Ruger No.1 breech block be adjusted up or down, thus changing position of the impact of the striker?

I'm thinking not as geometry might be the stop because of the angle of the breech block.

DoubleD wrote on Sep 13^th, 2025 at 1:20pm:

Actually yes, it can be adjusted and this is a common way to make a rimfre No. 1. It involves shortening (or lengthening) the small link that connects the breechblock to the lever.
Of course, you can also reposition the firing pin, which is more involved.

The caliber marking looks like the etching I used to do. Maybe I did the conversion. I don't remember that specific gun. From what I can see of the scope mount in the picture, it doesn't look like one I would have done. Maybe someone else did the scope mount.
When I first started converting these, I shortened the breech block arm and lowered the block. That method sometimes causes timing problems with other parts of the gun. I later switched to moving the firing pin. I wouldn't be able to tell how this one was done without disassembling it.