I've owned two Blasers in the past, the R93 Off Road and the S2 double rifle......superb firearms! I'm very sure that your new barrel for the 6.5x284 Norma will be a tack driver. If you reload, try the 129 gr. Nosler LRAB, I've achieved 1/2" and smaller groupings from this cartridge.......BTW, it's a Cooper firearm.
I'm sure too; you can see what Thomas does with it on YouTube with his THLR.NO blog and his R93. Only 2000rnds before he had to swap out though.