Need help finding the right magazine

[Belvedere]

Got my grandmother's . BSA 1918 .303 british and it is missing the magazine. I've looked up magazines and seems to be a few to choose from. Anyone know the one I need
Cheers

 

[55recce]

303 lee enfiled magazine for a No 1 Mk iii. The grooves on the side go all the way to the bottom

 

[Suther]

The full size magazine is a 10-rounder. There also exists commercial (and homebrew) conversions where they chopped the magazine to 5 to be closer to a flush fit with the stock. I'd get the 10rd mag personally.

 

[Mike Webb]

The correct mag has two locking notches on spine instead of one notch, they are for no.4 and no.5. Also the grooves on side running all the way to bottom instead of stopping just short of bottom edge of mag.

 

[Belvedere]

Awesome thank you gentleman
This would be the correct one ?

 

[Snider shooter]

Awesome thank you gentleman
This would be the correct one ?

That picture shows a No. 1 which will fit the rifle you described.

 

[Belvedere]

That picture shows a No. 1 which will fit the rifle you described.

Perfect thank you good sir