Unfortunately not, it is a boat tail. I don't reload, and I don't know of anyone in the UK (Kynamco, HPS, PPU) that loads commercial rounds with a flat base
The Kynamco I have does have the flat base bullets
(excuse the quality of the sectioning I only had a rusty screwdriver and an angle-grinder)
Mine are not the best, but they are not too bad. I can think of lots of Enfields I'd rather have but instead of constantly striving for more, sometimes it's good to be satisfied with what one has...