Aim mentioned on the video to have up to a 28 gm bullet or 435 grs. That sounds more like it. So from 13 gms /200 grs to 28 gms /435 grs.

A common feature of these European "new" cartridges is the attempt to have a wide range of bullet weights and uses. Probably partly due the number of guns Euro hunters are often limited too by law. The 8.5x63mm (.338) is another example where bullets weight from 160 grs to 250 grs (?).

I do wonder with these wide ranges how the rifles cope and what rifling twist copes with such a range as well.