As I said before Roy MLM ELM = Lee Metford, BSA commercial barrel is best match as the roll marks are on the barrel with civilian proofs, they are slightly heavy profile & this put the feel off a bit, I had some turned down but it is only a very slight amount .

A SMLE will screw on no trouble but is not what you want for your model there !

Oh you need to fill one hole on these, unless you find a Motty or BSA target barrel, I think you will have contacts to find one or more of these, if more than one drop me a line lol !