All three bullets are above this level out past 500 yards according to their data.
Last 2 components to consider:
- shooter (able to hit vial zone of animal at 500, or not?)
- what is point blank range of each caliber? If we are speaking of typical old fashion hunt, with crosshair on the animals shoulder?
I went to sellier bellot web pages as source because they have MRD distances on their web pages.
MRD - maximum recommended distance to zero the rifle
All three below cartridges have been zeroed at
3.7cm, 3.8 cm plus at 100 meters, same bullet, same weight:
308 win Nosler partition, 180 grain,
MRD 154 mtr, drop at 200 - 8.6 cm / drop at
300 - 46.4 cm
30-06 - Nosler partition, 180 grain.
MRD 162 mtr, drop at 200 - 6.4 cm / drop at
300 -39.4 cm
300 win mag Nosler partition, 180 grain,
MRD 180 mtr, drop at 200 - 2.7 cm / drop at
300 - 27 cm
None of this trhee will hit a heart of average deer or antelope at 300, if not holding high.
It is also to be noted, almost 20 cm difference in bullet drop between 308 win and 300 win mag at 300 meters.
So, if making a classic point blank range shot, without holdover, hunting distance for 308 win and 30-06 would be safe at 200 meters.
For 300 win mag, possibly up to 270 cca..
And to get safe shot in PBR - at 300 or a bit more, safe zeroing would be cca 2 inces high (5cm) at 100 meters (for 300 wm). With same zero, a 30-06 will get PBR - up to 250 meters etc
Energy is not the only variable, because if game is wounded, possibly will be lost. As the chance of miss or wound increase with distance, the stakes are higher.
After 300 meters, bullet drop becomes more significant, and other factors more influential. Thus my earlier point. Personally, I do not prefer long range hunting. It is more like sniping. Not my cup of tea.
My longest shot at game was at 204 meters.