Originally Posted by
waksupi
I get 2170 fps with a 290 gr. That's pushing past any factory loadings for power.
Originally Posted by
cwlongshot
Seems WAY WAY faster then anything I have herd of in the 358.
Originally Posted by
white eagle
all you need is the rite powder bullet combo
I agree that an apples-to-apples approach should be taken. The following are velocities from a ~180gr projectile from a .308-based cartridge with a 24-26" barrel. One would think that things would favor the .358 given longer barrel (better expansion ratio) and shorter bullet bearing length, yet somehow it's more than 200fps slower than the .338Federal.
With modern, strong actions you should be able to safely drive the .358 to far greater velocities than what's listed in commercial publishings, especially with some of the recently developed powders.
Waksupi's 290gr load is not out of line in terms of muzzle energy of 308-based cartridges running at modern pressures.
Code:
7-08 Rem 24"bbl 2.800"OAL IMR 4451 43.8C 2,598fps 58,800 PSI(175gr projectile)
.308 Win 24"bbl 2.800"OAL IMR 4064 45.2C 2,683fps 58,200 PSI
.338 Fed 24"bbl 2.810"OAL 8208XBR 48.5C 2,811fps 59,900 PSI
.358 Win 26"bbl 2.700"OAL H4895 48.0C 2,603fps 49,900CUP
Source: Hodgdon online reloading data