Foxtrot1
Well-known member
My 30-06 chronos at 2950 with 150 accubonds. (Not a +p load, close to max with ramshot big game).Depending on the weight of the bullet, I think your velocity may either be too fast for the .30-06 or too slow for the .300 win.
So, I get around 2850 with my .30-06 with a 168 gr bullet and I also get around 2950 with a 200 gr bullet out of my 300 Win.
So, if you are shooting the same bullet out of each; I am in question how it is only a 200 fps velocity gap.
From Wiki
30.06 vs 300
165 gr - 2800 fps vs 3300 fps
180 gr - 2700 fps vs 3150 fps
200 gr - 2550 fps vs 3000 fps
220 gr - 2500 fps vs 2875 fps
So, I think your numbers are a bit off, depending on the bullet the 300 is 375 - 500 fps faster according to wiki.
The MBPR is still probably similar give or take some yards , but the energy of the bullets is greater with the 300 win.
Energy = Velocity x Mass
We used my chrono testing my friends 300 loads and his rifle was pushing them at 3150 fps.
Just checked, and you are right. Hornady lists 150 gr american whitetail loads at 3275fps. So the box says they are faster than we chronoed. My friend doesnt really push max loads, he loads more for accuracy.
Either way, not a huge difference in MPBR. As you said, bigger bullets at longer ranges will highlight the difference.