My attraction would be that 270 performance in a short action. You are probably right - 270 performance, which would be pretty neat in a short action and more compact rifle. Actually maybe a little better because of better BC in 6.5mm. I have never shot a creedmoor or a 260, so I am sure not trying take anything away from those rounds. I just think 270ish performance in short action would be kind of neat. In a way, a fast 6.5mm in a short action fills a similar position in short action cartridges as does the 7mm mag in standard action - fast, flat, good bc and sd. Not the the equivalent of 7mm, more a like a counterpart in SA. I haven't been around the wsm cartridges - 6.5 wsm may be great or a little too much of a good thing
I have heard of a new one Hornady is working on 6.5 PRC. There were rumors of Ruger chambering it a while ago.
You're going to run into COAL issues with longer VLD bullets in a Remington short action if the case length is greater than 47mm. The 260, 6.5-284, 6.5 SAUM, and 6.5 WSM all have cases longer than 47mm.
The 270 WSM, 7mm SAUM, and 7mm WSM all approximate 270 WIN/280 REM performance in a short action and while the longer 6.5mm VLD bullets have superior BC numbers, they may be too long to fit into the SA magazine.
