Comparing 6.5 Grendel to .260 Remington

[Trooper]

Kind of a long shot, but does anyone have any velocity data for similar weight/the same bullet shot out of a 16" barrel for both 6.5 Grendel and .260 Remington?

I'd like a shorty bolt action rifle for bushwhacking, and would like it in some 6.5mm cartridge. I know that out of a longer barrel, the .260 gets better velocities than the 6.5 Grendel, which is to be expected due to the .260's greater case capacity.

But what about out of shorter barrels? Would I still see better velocities out of the .260 with a 16" barrel, compared to a Grendel? Or would I see about the same velocity with more muzzle blast and more wasted powder out of a .260?

I've tried searching, but haven't found anything on the web comparing these two. Not surprisingly, most people stick to longer barrels and heavier bullets for the .260, so I'm having a hard time finding an apples to apples comparison of velocities between the two.

http://www.eabco.com/6.5_mm_cartridges.html

The .260 Rem (6.5x51), as with the 6.5 Creedmore or the 6.5x47 Lapua, fits in the .308 type actions. The .260 Rem is based on the .308 case. And all of these rounds are designed to be fired out of a 20" barrel rather than a carbine length (16").

The standard of comparison is the 6.5x55 Swede which pushed a 140 gn. bullet at 2500 fps out of the barrel.

The 6.5mm has a BC of .600 which is normally only matched by the .338 (8.6mm): .338 Lapua Mag (8.6x70, 250 gn) or .338 Norma Mag (8.6x63, 300 gn)