If your gun is shooting low then you will need a shorter front sight. The Enfield's front sights differ by 0.015", and each increment should change the point of impact at 25yds by about 1/2inch or at 100 yds by about 2inches.
You could also try using different ammo. Heavier or lighter bullets will change the point of impact as well.
If you're planning on hunting with this rifle and you've already switched to a sporterised stock, may i suggest also getting one of the 'no-gunsmithing' scope mounts. There are several available, and they mount onto the receiver using existing holes, so you won't be ruining your milsurp by having it drilled & tapped.