I shoot both the 260 Rem and the 6.5x47. When I recently spent a bit over $4k to build a custom LR hunting rifle. I went with the 6.5x47. Here's why.
260 Rem: 20 deg shoulder
1. Prep brass
2. Load, Shoot, Load, Shoot, TRIM
3. Load, Shoot, Load, Shoot, TRIM
etc, etc
6.5x47:30 deg shoulder
1. Load, Shoot, Load, Shoot, Load, Shoot, Load, Shoot, Load, Shoot, Load, Shoot, Load, Shoot, Load, Shoot, Load, Shoot, Load, Shoot, Load, Shoot, Load, Shoot,
etc, etc, etc
I did not forget to include TRIMMING with the 6.5x47. I've never needed to trim the cases.
And my hunting load uses Rel 17 pushing the excellent 140 gr Nosler Partition to 2865 fps.
The small primer whoops butt on both the 260 and 6.5 CM.
Nuf said!
Alan