Gunsmithing tikka T3 action screw problem

mosin46

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Minuteman
Aug 11, 2010
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action screws loosening. when i went to retighten,i found the torx size falling between the sizes i had in hand. the same goes for my smith's larger set. t3 owners seen this? if it is some odd euro size,where to get the correct bit? T# scout 308. do not remember this problem on any of the 3 tikkas i have owned previously.