It usally goes without saying as an accepted basic premise, that proven bullet accuracy in a given barrel trumps any potential or advertised or bullet performance ...whether that bullet shoots straight in all you other same caliber rifles or not...
...and why you start with what you'd like to have for a "do all" bullet X's instead of trying to make a hopelesssly inaccurate bullet in your gun shoot to your desired level of accuracy.
No upside to chasin' the "one size fits all" previous usage or advertising....if it doan't shoot straight to begin with in that particular rifle. Or said another way....I would have NOT married my wife's sister under any circumtances, and my wife of close to 50 years can sometimes barely stand to be in the same room with the guy her sister married either time.
Remember Aesops Fables outcome of the "Scorpion & and the Frog's" crossing the river when they get to other side
TooTaToo...We have MET the Enemy...and He is US !!... Pogo
Those who fail to learn from History are doomed to repeat it...George Santayana