.75moa 100% of the time is very impressive. Nothing Ive ever owned can do that.The tikka I don't own.
In reality, all my rifles shoot adequately the same. For me, all I care about is being able to hit a 3" circle at 400 yds "cold bore" first shot.
The rifle I can shoot the best may or may not be more accurate than my other similar gun, its just heavier and has a higher-powered scope, so its easier to be a tiny bit more precise. One is a unmodified tikka CTR 6.5cm in a bravo chassis with a cronus btr 4.5-29x scope. That gun is very easy to keep 10 shots inside 1.25”, 3 shot groups are often clover-leaf touching holes. The other is a unmodified t3x in a alterra stock with a S&B klassik 3-12, I have a couple barrels for it that both shoot pretty consistent 1.5” 10-shot groups, and often put 3-shots into .5-.7 inches.
In both cases the guns are accurate enough that I really cant ever blame the gun with a straight face.