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Old April 4, 2007, 10:49 AM   #17
sasquatch
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Join Date: December 14, 2005
Location: Western WA
Posts: 1,347
Quote:
According to Federal's ballistics the .270 with 150 grain Partition has only 100 ft-lbs less energy at 300 yards than the 06 with a 180 grain Partition.
I, too, shoot a .270 with 150 gr. Nosler Partitions. However, the Federal ballistic tables show 1735 ft/lbs @ 300 yards for the 150 gr. .270. vs. 2150 ft/lbs @ 300 yards for the 180 gr. .30-'06. Quite a difference in favor of the .308, I'm afraid (over 400 ft/lbs.).

Ballistically speaking, the .308 150 gr. bullet is a total dog compared to either the 165 gr. or the 180 gr. The latter two beat the .150 gr. hands down.

.308 150 gr. BC - .393 SD - .226
.308 180 gr. BC - .474 SD - .271

Go with either the 165 gr. or the 180 gr.
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