I also have Tikka Roughtech 6.5 PRC )) But I trust Reloading more, so I bought VV565 powder and Hornady 147, 153 A-Tip bullets. I want to tune one of these bullets
I shoot with Tikka 6.5 PRC barrel 24.3. I shot on different days with factory cartridge Hornady Match 147. The first time I thought that I accidentally made such a group, a week later I tried two more times and got the same results.