Cartridge Hall of Fame: 270 Winchester Ammunition | MidwayUSA

Published on September 28, 2010
Duration: 1:30

The .270 Winchester, introduced by Winchester in 1925 and initially chambered in the Model 54, is a medium-power centerfire rifle cartridge. Based on the .30-06 case, it offers over 2,700 ft-lbs of energy and remains a top seller, popularized by Jack O'Connor and the Winchester Model 70.

Quick Summary

Introduced in 1925 and first chambered in the Winchester Model 54, the .270 Winchester is a medium-power cartridge based on the .30-06 case. It generates over 2,700 ft-lbs of energy and remains popular, often loaded with a 130-grain bullet at 3,000 fps.

Chapters

  1. 00:00Introduction: .270 Winchester Hall of Fame
  2. 00:10Historical Background: Winchester Introduction
  3. 00:19Technical Overview: Power & Naming
  4. 00:36Design Characteristics: Case & Headspace
  5. 00:45Popularity: Jack O'Connor & Model 70
  6. 00:53Modern Performance: Bullet Weights & Velocity
  7. 01:10Legacy: Enduring Popularity

Frequently Asked Questions

When was the .270 Winchester cartridge introduced and what rifle was it first chambered in?

The .270 Winchester centerfire cartridge was introduced by Winchester in 1925. It was initially chambered in the Winchester Model 54 bolt-action rifle, marking its debut in the firearms market.

What are the key design characteristics of the .270 Winchester cartridge?

The .270 Winchester is based on the .30-06 family of cases. It features a rimless bottleneck design, where the cartridge's shoulder is critical for controlling headspace, ensuring proper chambering and firing.

How does the .270 Winchester perform in terms of power and common loads?

It's a medium-power cartridge generating over 2,700 ft-lbs of energy. Common loads feature a 130-grain bullet traveling at approximately 3,000 feet per second, offering effective performance for hunting.

Who helped popularize the .270 Winchester cartridge?

The late Jack O'Connor was instrumental in popularizing the .270 Winchester. His endorsement, particularly when paired with the iconic Winchester Model 70 rifle, significantly boosted the cartridge's reputation.

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