It seems like some guys have "all the luck" grin

Like you, all my hunting rifles shoot a Sierra bullet to the same POI as they shoot a TSX/TTSX. My Kimber Montana 7WSM shoots the 162gr A-Max, 140gr PH fire-forming load, and the 140gr TTSX to the same POI. Tikka T3 .25-06 does the same with 100gr MK and 100gr TTSX, Ruger Hawkeye .280 with the 140gr PH and 140gr TTSX, etc. Sometimes it takes a bit of effort, but it can often be done, IME.