Why you guys suppose the groups were relatively better at distance with the 195? There are people who don't think that can't happen.....
I'm guessing it's because the 7mm 195gr bullet is so long for caliber that it requires a lot of rpm's to stabilize, and it takes a while for torque-induced nutation/precession to be ironed out from its gyroscopic motion. This often takes place closer than 100 yards, but in this case it might be just beyond. Bryan Litz discusses this concept in greater detail in his book Modern Advancements in Long Range Shooting.
