For normal post-firing cleaning I use 009 on a soft bristle brush, with a Parker Hale rod and jag. Patch out afterwards until they come out acceptably clean from the No.4 (bore's long past shot out!) or clean from the SMLE, with its better condition barrel. If I need heavy-duty cleaning, after sustained rapid firing or a few days' competition shooting, I use C2R, which seems to dissolve every type of barrel crud known to man and then some.

I also have the bolt body only from a skeletonised No.4 which I use as a rod guide. Sadly it won't fit in the SMLE and it's too long for the No.8.