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.270 Win

The .270 Winchester (or 6.9x64mm) was developed by Winchester Repeating Arms Company in 1923 and unveiled in 1925 as a chambering for their bolt-action Model 54.

The .270 Winchester became a very popular deer and elk cartridge due to the widespread praises of gunwriter Jack O'Connor who used the cartridge for 40 years and espoused its merits in the pages of Outdoor Life.