We're referring to non-magnum. Long action is still popular just not here. I use it for 25-06, 6.5x284, and .244 Remington. Set up the same as my short action .308 and 22-250. Has nothing to do with better powders coming out. No brakes were used for this public service announcement.
I think most people like myself are only able to stretch out 1000 yards, if that. I have a location 90 minutes from me that is 1000, and one 20 that’s only out to 200 yards. So I don’t see a need for a LA caliber. I want a 7saum but the 6.5CM works great for the distances I shoot
The '06 is still a major discipline for 1000 yard comps. No scopes. But you make a good point. Better bullets with smaller cartridges and great ballistics.