1911 - 9mm vs 45 ACP

Published on May 23, 2020
Duration: 8:24

This guide, drawing on the expertise of Larry Vickers, details crucial modifications and maintenance for the 1911 platform. It covers the importance of ramped barrels for specific calibers and frame materials (9mm, 10mm, aluminum frames) to ensure feeding reliability. Additionally, it emphasizes the critical role of proper extractor tension and adequate lubrication for consistent 1911 performance, offering a bench test for tension verification.

Quick Summary

Larry Vickers highlights that 9mm 1911s offer higher capacity (10+1) and softer recoil, especially in aluminum frames, while .45 ACP has a traditional appeal. He recommends ramped barrels for 9mm/10mm and aluminum frames to ensure feeding reliability, and stresses the critical need for proper extractor tension and ample lubrication for 1911s.

Chapters

  1. 00:36Introduction to 1911 Calibers
  2. 01:42Magazine Capacity Comparison
  3. 02:44Frame Materials and Recoil
  4. 03:51Barrel and Reliability Specs
  5. 04:57Extractor Tension and Maintenance

Frequently Asked Questions

What are the key differences between 9mm and .45 ACP in a 1911 platform?

The 9mm typically offers higher magazine capacity (10+1 vs 8+1 for .45 ACP) and softer felt recoil, especially in lightweight frames. .45 ACP is often perceived to have greater stopping power, though modern 9mm loads are highly effective. Reliability considerations like extractor tension are more critical for 9mm in a 1911.

Why is a ramped barrel recommended for 9mm or 10mm 1911s?

A ramped barrel integrates the feed ramp into the barrel itself, creating a smoother transition for the cartridge into the chamber. This is particularly beneficial for smaller-diameter cartridges like 9mm and 10mm, and for aluminum frames, to prevent feeding failures and enhance overall reliability.

How does frame material affect recoil in a 1911?

Steel frames absorb more recoil than lighter aluminum frames, making a steel-framed .45 ACP feel softer shooting than a lightweight .45 ACP. However, 9mm remains very soft-shooting even in aluminum frames, making it a comfortable option for carry pistols.

What maintenance is crucial for 1911 reliability, according to Larry Vickers?

Larry Vickers stresses the importance of proper extractor tension, especially for 9mm, and adequate lubrication. 1911s generally require more frequent and thorough lubrication than many modern polymer pistols to ensure smooth operation.

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