apexhunter wrote:To the contrary- there is definitely an advantage of the WSM compared to the win chambering in .270. With Fed Premium 140gr accubond loadings the ballistics are as follows:
WIN: velocity- muzzle- 2950'/sec, 200yd- 2579'/sec
Energy- muzzle- 2705'#, 200yd- 2067'#
WSM: Velocity- muzzle- 3200'/sec, 200yd- 2807'/sec
energy- muzzle- 3187'#, 200yd- 2450'#
The WSM provides a 250'/sec gain in muzzle velocity and over 480'# of energy increase with the same projectile. Some may say that much difference in velocity and energy isn't significant but wildcatters have been tweaking cartridges for years looking for just 150'/sec more velocity while remaining within safe pressures...WSM gives you much more than that.
Above and beyond the weight loss of the WSM rifle the shorter action also provides the potential for better accuracy as the shorter action is stiffer providing a consistent and solid base from which the projectile is launched.
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