06-02-2022, 09:12 AM
Interesting 1950-1966 study:
Tested 4 Calibers: .30 .27 .24 and .21 and 3 powder loads 100%, 80%, 60% of a 30-06 cartridge.
The Charts shows the positive results moving from the 30-06 cartridge to .224 caliber for 400 yard combat with only 60% gun powder. Both better Hit Probability and Wounding Power.
The Charts shows the positive results moving from the 30-06 cartridge to .277 Fury at all combat ranges, they had to increase the pressure to get 30-06 performance out of a 308 size case with a short barrel. Both better Hit Probability and Wounding Power at all ranges.
A 6.5 Grendel like load was in the study but it did poorly relative to 30-06 cartridge. This may be why 6.5 Grendel and 6.8 SPC ammo never was a final solution to the US military. The lowest line on both charts was like AK 47 like cartridge.
I marked the charts with load similar to .277 Fury, 270 Win, .25-06 Rem, 30-06, .224 Valkyrie, and 6.5 Grendel.
[ATTACH=CONFIG]18875[/ATTACH][ATTACH=CONFIG]18874[/ATTACH]
https://www.everydaymarksman.co/resource...try-rifle/
Tested 4 Calibers: .30 .27 .24 and .21 and 3 powder loads 100%, 80%, 60% of a 30-06 cartridge.
The Charts shows the positive results moving from the 30-06 cartridge to .224 caliber for 400 yard combat with only 60% gun powder. Both better Hit Probability and Wounding Power.
The Charts shows the positive results moving from the 30-06 cartridge to .277 Fury at all combat ranges, they had to increase the pressure to get 30-06 performance out of a 308 size case with a short barrel. Both better Hit Probability and Wounding Power at all ranges.
A 6.5 Grendel like load was in the study but it did poorly relative to 30-06 cartridge. This may be why 6.5 Grendel and 6.8 SPC ammo never was a final solution to the US military. The lowest line on both charts was like AK 47 like cartridge.
I marked the charts with load similar to .277 Fury, 270 Win, .25-06 Rem, 30-06, .224 Valkyrie, and 6.5 Grendel.
[ATTACH=CONFIG]18875[/ATTACH][ATTACH=CONFIG]18874[/ATTACH]
https://www.everydaymarksman.co/resource...try-rifle/