Description
The 270 Winchester is a rifle cartridge developed by Winchester Repeating Arms Company in 1923 and unveiled in 1925 as a chambering for their bolt-action Model 54. The cartridge is the same length as the.280 Remington, both of which are longer than the.30-06 Springfield. The.270, .280, and.30-06 were all derived from the.30-03 parent case and the bore diameter was likely inspired by 7mm Mauser. The.270 Winchester uses a.270 inch bore diameter and a.277 inch bullet diameter.
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