Garandimal
member
You can gain the velocities with same bullets in a true short action, without needing a custom build, and the barrel is twisted right for the long wind buckers. If the .270 came with a fast twist and could handle the longs, this wouldn't be much of a topic. Past 300 yds the wind on the 6.5 143 and 156 eld/vld will be less of an issue than ANY standard .270 loading. To really gain more ground, you need more powder under the 6.5 (prc, Norma, win mag, leopard, etc) or bump up to a fast 7 (aforementioned) the .270 with a fast enough twist and appropriate bullets is dandy enough, but realistically that's more custom at this time than either a .264 or .284 endeavor.
The new 6.8 WESTERN cartridge got me thinkin' about that...
And have come up w/ a 24" varmint contour 1:8 twist Bbl., .270 WCF case, throated to the 6.8 WESTERN cartridge, and long-loaded to fit the Remington M700 3.600" long action magazine.
The .270 LAWGR (Long Action Winchester)
Should be ~ a 9.5-10 lb. rifle scoped, and shoot 150-175 gr. Partition/ELD bullets at the 3100-2850 fps of the new cartridge, using std. .270 WCF reloading components.
That's 1,500 ft-lbs at 600 yds w/ the 150 gr. ABLR, and supersonic past 1,300 yards.
Maybe ~ 800 yds for the 175 gr. in the pipeline.
Haven't figured out what it's good for yet.
GR