Don Heath's 'All Round Rifle'

[HWL]

My all around rifle is a custom FN M98 9.3x66 Sako that I am very happy with. In the past, I had a 9.3x64 twin to it that I was equally happy with. The only difference was 5 rounds in the magazine vs 3.

Does this mean, the 9,3x66 shows pretty much the same performance in the field like the 9,3x64?

HWL