I would not want light for caliber bullet in the magnums based on this experience of one and it pretty much describes
I agree, but they don't make any "light for caliber" ELD-X's. In 30 caliber the lightest bullet is 178 gr up to 220 gr. I haven't shot any game with them yet, but based on what I'm reading and seeing from others I think it is going to be a good bullet. A little on the soft side, but with the heavier bullet weights I'm thinking it should be fine. The results in the Field & Stream test are impressive.
I've gotten excellent accuracy with 200's in my 300 WSM and 178's in my 308. For whatever reason I haven't found the right combo with either weight in my 30-06, at least not yet. At 300 yards the 178's fired from my 308 only have 2" more bullet drop than 150 gr SST's. And even though they start 200 fps slower are virtually the same speed at 300 yards, faster beyond 350 yards.