Good for you. In my never to be humble opinion, the 6.5X55 and the 7X57 are probably two of the best balanced cartridges ever designed. The 8X57S is a close third.
The American 260, 7-08, and 30/06 rounds are also well balanced, and are very similar to the above European rounds. However, Americans want SPEED for that long shot they will likely never take.
The European philosophy is to throw a relatively heavy bullet at a moderate velocity. This is realistic for typical game ranges.
The Six-Five with its 160 gr, the Seven with the 175, and the Eight with the 198 gr bullet will harvest the largest game with proper bullet placement
Recoil is almost a non issue with the Six-Five and Seven. The Eight kicks a bit with the 198 grainer.