The Sako model 85 Finnlight comes in three barrel lengths:
S / 515 mm (20.27")
SM, L / 620 mm (24.40")
M / 570 mm (22.44")
With a 22 inch barrel the 6.5x55mm does just fine without the need to push pressures.
I have a model 70 featherweight in 6.5x55mm that has a 22 inch barrel. Here are some of my load experiments.
Winchester Model 70 Featherweight in 6.5x55 Swede Mauser.*This rifle has been glass bedded.
At 100 yards, light snow, 32F. 6-8 knot wind.
Federal factory 140gr Soft Point: = 2,375 fps, 0.50 inch group.
120gr Nosler Ballistic Tip: 46.5gr RL-19, Lapua, CCI BR-2, 3.085 col= 2,560 fps and a 1.0 inch group120gr Sierra Match King: 46.0 gr RL-19, Lapua, BR-2, 3.085 col= 2,508 fps and a 0.50 inch group.
140gr Rem Accu-Tip, 47.0gr RL-22, Lapua Brass, CCI-200, 3.970 col= 2,640 fps and a 1.0 inch group
140gr Nosler Partition, 47.0gr RL-22, Lapua Brass, CCI-200, 3.950 col= 2,569 fps and a 1.5 inch group
140gr Hornady Soft
oint , 47.0gr RL-22, Lapua Brass, CCI-200, 3.850 col= 2,575 fps and a 2.0 inch group
140gr Hornady SST, 46.5gr IMR-4831, ww,ww, 2.995 col
=2,700 fps and a 0.75 inch group,
primer flow
140gr Sierra Game King, 44.5gr H-100V, WW, WW, 2.930col
= 2,675 fps and a
0.55 inch group Lee factory Crimp, no pressure signs
140gr Hornady SST. 46.5 gr RL-19, Lapua, CCI-200, 3.090 COL
= 2,570 fps and a 1.0 inch group
160gr Hornady Round Nose: 45.0 gr RL-22, PMC, Rem 9.5, 3.100 col= 2,288 fps and a 1.5 inch group