I bought a tikka 223 varmint about a couple weeks ago. I just got a custom 6.5 creedmoor finished the same day as I picked up the tikka (long story). So today I decided I would shoot the tikka. Went to put the rail on and it doesn’t take standard 6-48 screws. Found a few others in the spare parts bin so I made do. Cleaned the barrel and shot cleaned a few times then shot a group with 55grain fmj federal bulk and pmc 55 grain fmj. Both groups were crap. Cleaned the rifle again and shot 2 more groups, still crap. Groups around 2 or 3 inches at 100 yards. Pretty disappointed at this point. Went in he house picked out some once fired random brass that I had and loaded Varget and hornady 75 bthp. Let’s just say I had my doubts until I fired the next 4 groups.