Wrong, apples and apples compared,
I used the velocity you quoted for the 6.5, the 30-06 was a top end reload figure. Both were round nose bullets, so if we adjust for the increase velocity of the 6.5 both have almost the same drop but of course the 220 grain has better sectional density and more importantly greater frontal area.
Well you have handicapped the 270 by a 100fps with the right powder it can push a 150gn bullet at over 3000fps. Of course all figures quoted are meaningless without the barrel length. Now you are starting to get on to bullets for use on medium game/deer a large SD is counter productive, even 30cal 308 bullet with a relatively poor SD will have no problem penetrating to the vitals on the largest red stag, all you achieve is over penetration and a smaller wound channel using a high SD bullet.
The figures from the manufacturers you quote are above what most reloading manuals quote, I would be very surprised if anybody could get much better velocities than that, the Scandinavian manufacturer figures for the Swede, they need to be good of course as it forms a big part of there sales. But what barrel length are they using, are they using slightly over sized “fast barrels” to achieve the quoted velocity? There must be a large financial incentive to do so .
Most ammunition manufactures glaze the cherry a bit to hopefully pick up more sales. 
At the end of the day you can “cherry pick” all the data you wish when it comes to ballistics,/physics, the fact remains that the Swede has a case capacity of only 3.68cc compared to any cartridge based on the 30-06 4.3cc. If both are loaded equally as well to the same pressure etc the 30-06 based round will always come out on top by a good margin, especially as the bullet weight increases. If it does not it must mean that the load has been hamstringed in some way.
Anecdotally:-
A good friend of mine hunted red stags with me for 5 years before he was sick to the back teeth with his 6.5, he was getting far far more runners than the rest of our group, now he will only use it for roe.
The Irish Sika hunters on here do not hold the caliber in high regard either, my mate when asked about the Swede always remarks, my dog loves it when a client turns up with one,
because he knows he will have a runner or to to follow up on.
As your countryman Jagare says moose are not tough animals, I remember reading something by one of our American cousins that if moose were pound for pound as tough as Elk he would not hunt one with anything less than a 416. Elk are close relatives to our red deer, now I think reds die pretty easily, epically in comparison to Sika.
Remember bigger case means more powerful end of.
ATB
Tahr
i don't understand why you believe 6,5x55 is underpowered for deer hunting in UK?
the 6,5x55 generates much more than enough according to your laws in britain!!
For Muntjac and Chinese Water deer only- a rifle with a minimum calibre of not less than .220 inches and muzzle energy of not less than 1000 foot pounds and a bullet weight of not less than 50 grains may be used.
For all deer of any species - a minimum calibre of .240 and minimum muzzle energy of 1,700 foot pounds is the legal requirement.
Northern Ireland
For all deer of any species - a minimum calibre of .236 inches, a minimum bullet weight of 100 grains and minimum muzzle energy of 1,700 foot pounds is the legal requirement.
Scotland
For roe deer, where the bullet must weigh at least 50 grains AND have a minimum muzzle velocity of 2,450 feet per second AND a minimum muzzle energy of 1,000 foot pounds may be used.
For all deer of any species - the bullet must weigh at least 100 grains AND have a minimum muzzle velocity of 2,450 feet per second AND a minimum muzzle energy of 1,750 foot pounds.
you can move a 100 gr bullet at far over 3000 fps in 6,5x55
anyway a gutshot deer even with 375 is a gutshot deer and can run a lot before going down!! and 100 fps more speed of 270 win won't help you
a RPG may work well to kill a deer with bad shot
you'd better tell the law makers to change the law
if you need a 416 to kill an elk, then better hunting bear and boars with caliber 50 BMG!!!
or even better with 40 mm bofors canon
any big game shot in heart lung area can run until the blood pressure totally fall and it takes between 30 second to a couple of minutes depending to the seize of theanimal .
After a good hit they usually run away from a few meters to hundreds of meters and later will fall dead.
if you want them fall right down then , you'd be better to shoot them in the head or CNS system.again shot placement!
The fact is a swedish moose has much larger body than the other european deers and normaly needs moore punch and energy release not less than a sika or red deer!!and 6,5x55 has been able to give enough punch and energy to kill moose.
they usually run away until they are out of fuel! no matter caliber!! naturally a much larger caliber like 9,3x62 may somewhat shorten the distance they will run, but not very much only a dozen of meters or so!
here is result of research done by hunters organisaon for the season hunting result from gävleborg county in sweden.
1-caliber 2- numbers of moose 3- distance in meters run after hit 4- number of shots per moose
Kaliber Skjutna älgar Flyktsträcka (m) Skott/älg
30/06 2849 47 1,57
6.5x55 2792 43 1,57
308 win 1314 41 1,67
8x57 IS 575 57 1,53
9.3x62 449 34 1,50
358 Norma 219 19 1,16
375 H&H 211 31 1,33
9.3x57 134 41 1,50
7mm Rem 107 40 1,32
338 WM 83 31 1,20
300 WM 27 16 1,83
Totalt/Medel 8760 43 1,56
total of 8760 moose average 43 meter runned average 1,56 round per moose
I take a red hot blooded brunett anyday who gonna leave me ruined !! 
,reload 120 BT's no problem on 20 stone+ stags,works fine,calibres=everyone has their favourites,.270 good too
