 Use of a supercharge, where one of the six charges was increased in weight to , making a total of propellant, and increasing the elevation to 45° extended the range to about with the existing 4 crh shells.New 8 crh high explosive shells, with a longer, thinner ballistic cap, were ordered, but only two shells had been delivered before the end of the war.Some of the existing stock of 500 APC and 500 CPC (common, pointed, capped) shells on hand from "Furious" were modified with the new cap and were probably the only shells used during the war.