29 October 2018
If it works well in the Contender I would stick with the same load. In my opinion, the theory that some bullets "run out of lube" in a long barrel isn't well supported by actual testing. It might be true for black powder which I have no experience with.
I shoot mostly 22 cast bullets including the 225415 and usually lube only the tiny space ahead of the gas check I have never found a problem in barrels as long as 26".
If your Tikka has an eight inch twist as mine does, it will stabilize bullets up to .9" which may be easier to shoot than the very short bullets meant for 14" twist. I have found that both NOE 22570RN and 22780SP shoot well in my Tikka. The 80 grain bullet is much better in the wind than anything else available for ranges over 100 yards.