Swampy, if a M70 Fwt is 'heavy' - you need to work out w/weights.

FWIW, my M70s shot sub moa fine, killed plenty well, every time.

I had a MR in 270 that shot 2.5" out the box, needed the bolt lugs lapped, stock glassed n floated, crown re-done, THEN it FINALLY shot, but I was SO P'od for all the BS, I sold it.

Oh, did I mention another 700 where the Bolt handle broke/fell off? Yep, your wife would not be too happy about that....