Like Rene, I have never seen a British WWII period .30 inch drill round with a chromed case with red flutes, although some examples of the D 1942 Canadian Pattern have been reported with red flutes. (see below). The only other chromed drill rounds from that period are those with green flutes made by Remington.
The approved .30 inch British drill rounds in WWII were:
Cartridge S.A. Drill .30 inch D Mark I - Made from a fired US case fitted with a ball or AP bullet, usually soldered to the case, with two pairs of holes in case and a wood distance piece.
Cartridge S.A. Drill .30 inch D Mark II - Also made from a fired US case drilled with two pairs of holes, but with a combined red wood bullet and distance piece.
Cartridge S.A. Drill .30 inch D Mark IIII - For Indian service. Only a drawing is known and consisted of a brass case with six flutes and a ball bullet on a wood distance piece.
Cartridge S.A. Drill .30 inch D Mark IV - Similar to the Mark II with the bullet and distance piece made in one, but with the bullet portion covered by a CN or CNCS envelope.
Cartridge S.A. Drill .30 inch D. 1942 Canadian Pattern - Used a ball case and bullet, the case chromed with three plain flutes. However, some have been noted with red painted flutes.
There are other WWII British drill rounds that were not allocated a formal title, including the cast metal type made by Lines Bros. and D Mark II type but with red plastic bullet and no case holes. Also quantities of the Canadian C13A1 drill round entered British service. These had a plain brass fluted case with a commercial style headstamp “D.C.Co. 30SPG”.
Post war the Cartridge S.A. Drill .30 inch D Mark 5 was introduced which had a chromed case withn three red flutes, but these can be readily identified by the date in the headstamp, usually 1963 or 64.
Picture shows D Mark I, D Mark II, D Mark III, Canadian C13A1, D Mark 5.