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Did you ask for a target rifle for 1000y shooting specifically? or was there mention of hunting?

Because a 3 second google will show you the difference between a dedicated range/target rifle and...

You may want to consider a brake? A suppressor will certainly reduce felt recoil a bit but nowhere near as much as a brake.
For target shooting the heat build up of a few shots threw a suppressor...

+1

That said tho the 270 is well capable of shooting 1000y even if there are better choices.

It should not be bruising your shoulder if you have a good position and good hold, which is probably...