Sounds good! What do you mean by north american brass?
European 6.5 Swede brass has a slightly different base diameter than north American made brass, which has the same base diameter as the 308/270/30-06 etc. The differences are small, but stacked tolerances can and will bite you in the ass. With the 270 bolt head, stick with NA brass and you should be fine. In regards to recoil, I found my win 70 270 recoiled a lot more than any 6.5 Swede I ever owned. But that was stock design. Change the stock so the comb was lower and the problem went away. 270 still recoils more than the 6.5 Swede, but not by a huge amount. - dan