Hi there,
By the sounds of it you have bought some bullets to in order to load your own cartridges.
Maybe share some proposed load components and data with us, could be useful.
Nothing wrong with this bullet choice, as others mentioned they need to be used with the consideration that monolithic copper bullets do not expand as readily, are less dense and hence longer.
SAKO use Barnes TTSX for all their non-toxic loadings (Powerhead II I think). Might recommend that you take a look at those as well.
A lot of people load the .270 with a large rifle magnum primer as well, something to think about.