Short answer is its a mistake. Has to be. Either its a typo on the weight, or they are referencing wapiti / red hybrids, under the heading red deer. The interbreeding issue confuses matters a lot - just look at the problems they have in Fjordland with trying to determine what belongs under wapiti regulations, and what is classed as a red deer, it can be very subjective on the periphery of their range. Anyway, I know bugger all about the reintroduction of pure elk to Scotland, or which sub-species (there are lots), only that there’s been a few by private land owners. I have no idea how many wapiti/red hybrids you have.
I just remember for years my Grandpa bemoaning how small and poxy the deer in Scotland were. (He’d spent many years pre- and post-war in Canada... his perspective on pretty much everything was warped from years working in the wilderness. He went back in his late 70s after Grandma died and married again and carried on breeding, commendable effort, thats why I have part indigenous rellies in that part of the world. Bloody good bunch they are too.) Anyway, thread wandering... my new stock has arrived... off to collect for some fun rifle building over the weekend