New Barrel for a BSA R10... Lothar Walther

[Si Titor]

Some time ago I picked up a .22 Daystate 12mm OD Lothar Walther barrel second hand, so since my new lathe is up and running now I thought I would have a go at modding the barrel to fit my R10.

Now the R10 takes a barrel that's a tad under 16mm so I was going to have to sleeve the barrel at the breach end also the barrel was going to be shortened to 305mm (carbine length).

I turned the barrel down a little and turned up a bit on BMS round bar




Used a set screw and epoxy-ed the sleeve on




Turned a 1/2 inch UNF adaptor as well and did the single point thread on the Boxford AUD and cleaned it up with a die after





Lot of swarf there.





Oil Blacked the adaptor (its going in a shroud but it adds an amount of anti corrosion protection)





Barrel crown




Milling the transfer port





I Have lapped out the barrel but still have to do the lead into the breach next week I should think.

 

[Mr Bond]

Nice work, love to see this stuff!

 

[Si Titor]

Nice work, love to see this stuff!

Thanks Mate.

 

[Si Titor]

Another photo showing how it looks complete.

 

[GrahamHenderson]

what was wrong with the original barrel ?

 

[Si Titor]

what was wrong with the original barrel ?

Nothing I just wanted to see if the Lothar barrel would have an improvement, one thing I will say is while lapping it, it was smoother from the start than the bsa ones I have lapped in the past.

 

[Si Titor]

The Huma shroud I have at the moment had these bits in it but I am going to replace them with my own baffles.

 

[Si Titor]

Some honing on the rifling just past the transfer port.



Almost there now just have to fix the 1/2 UNF adapter to the barrel.

 

[GrahamHenderson]

just have to fix the 1/2 UNF adapter to the barrel.

what silencer are fitting? ....
edit ... ahh I see the threaded shroud end