Old 112, have you picked up your tikka yet? I just bought a new tikka T3 lite in 6.5x55, put a 4.5x14 nikon on it and took it to the range. AWESOME rifle, I had a pretty good idea of what powders and bullets to try based on my custom heavy barreled 6.5x55 but I had no idea how easy it would be to find good loads for this rifle.
I tried 14 loads, 3 shot groups, to get an idea of what it liked, only 2 loads shot poorly, 12 loads went into 1.25" or less, 5 loads went less than .75", 3 loads were right at .5".
My rifle really liked the 125 partition, 120 ballistic tip and the 140 A-Max.
It also liked Norma MRP (RL22) work up to 50.5 gr with the 120's, 49.0 gr with the 125 (.42" 3 shot group ) and 47.0 with the 140. Also seemed to like CCI BR2 with this powder
It also did well with Varget and the 120 Ballistic tip, work up to 40 grs.