I have said this before and I will say it again.
All these 6.5x55, 7x57, .30/06, .303, 8x57 are former military cartridges from the early 20th Century. All were the result of much work in realising that something with a bullet of a minimum weight of 10 grams (154 grains) and 6.5mm (.264") would kill men heavily clad in greatcoats, webbing and leather harness at ranges out to 1,000 yards using fully jacketed bullets.
And by the timeline of the epoque they came about in to inflict fatal harm on horses if the shot was delivered to the right spot. Be those cavalry horses or heavy horses drawing guns and limbers. Have little or no doubt that they will kill any and all deer out to a quarter mile with expanding bullets if you place the shot right.
Enough said? The formula be that the Swedes, the Spanish, the Americans, the British or the Germans varies only in detail. In the broad picture it's anything of a baseline of 154 grains of .264" diameter at 2,400fps works and as long as your are there as a minimum for each input you are getting something that works.
Factor in expanding sporting bullets and you've only but increased how well it works.