Yea, that's pretty much what I'm saying. I can't account for that. Maybe you should practice more with the Remingtons. None of these rifles have been touched? They are exactly the way they came out of the box? Really?
Only the Savage 111GNS .30-06 and Ruger M77 MKII VT .22-250 are as they came from the factory. Both came with floated barrels. All the rest have had the triggers polished (Ruger) or adjusted (Remington) and the barrels have all been floated to eliminate changes in POI due to fluctuations in temperature or humidity (these are hunting rifles). For what it is worth, ALL my centerfire bolt guns have floated barrels and the several Rugers shoot MOA or better (.25" best, .75-.85" typical).
That said, the two Remington M700 .30-06's, both new in the last couple years, were initially shot as they came from the factory, both with several types and brands of factory ammo (about 6 in all) and both shot about 1-1/2MOA at best. They shoot better with handloads and the barrel floated, but still only about MOA best case.