Majja13,
I have a 6.5x55 BJAI, and I am here to tell you it is a real nice "Ackley". P.O. never applied his magic to the Swede, but Bob Jourdan certainly did. The beauty of it is, you can still use the factory 6.5x55 ammo. I will say this, I had a few hundred regular 6.5 rounds still loaded up when I decided to have my chamber opened up to BJAI, and that ammo shot even better in the BJAI than it ever did in the original chamber. That said, the original chamber was not overly well done... I will not lie.
Another + as for as I am concerned is that by using a Long Action, you can seat the bullets *WAY* out and still be well within mag length. Now if you have Bob chamber it, make sure to specify how you want it throated bullet weight wise. I will not post how fast my 26" tube was capable of pushing out the 120gr gamekings
Probably part of why my tube gave it up a little earlier than originally expected. You can get good brass for the Swede too, Lapua, Winchester, Remington, and Norma all come to mind right off the top of my head. I ended up using Winchester, but they all work well in the Swede. At the moment I still have that stick, but only because I have been horridly lazy in getting a new, and needed, tube for it.
Gary