I am certainly no expert on reloading, having only started a few years ago, the previous 30 years were spent using factory fodder in various makes and calibres of rifles.
I have a Sauer 202 elegance in 6.5x55 and 30-06 and have found that both calibres to be totally accepting of whatever load / bullet weight I use, and will shoot sub half inch (and usually better) with just about anything I have tried to date. I have tried softpoints, ballistic tips, boat tails of varying weights using N150 and N160 and all work so well.
I have never experienced this before with other rifles; either I have been exceptionally lucky or (dare I say it) is down to the Sauer being a slightly better quality rifle? Or the powder is good match to calibres.