Nepal did make/reverse engineer Sniders, (also Martini's I think). I have heard people talk about Nepalese reverse engineered Enfield's, but have never seen an example.
Assuming they exist, if they are as good as the locally made Sniders, they are probably pretty good.
I would guess early Lee designs though, as the events of the early 20th Century would have meant a glut of Britishand Indian SMLE'S heading to Nepal, with no subsequent need to build their own.