Congratulations on your new Savage. I have an older Remington with the 1:9 twist. Mine will not shoot 140's worth a darn but does pretty well with 120 and 123 gr. bullets. I've never tried 129's. I've tried IMR 4350, Benchmark and IMR 4064. My best groups have been with either bullet, Sierra and Hornady don't seem to vary much, with 45.5 and 46 gr. IMR 4350. As you know, your rifle and twist is completely different so you will need to experiment. If I were you I would try the 140's from Sierra and Berger.
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