243 vs 6.5 vs 7mm-08 vs 308: Not Even Close?

Published on August 9, 2024
Duration: 14:59

This video provides an expert-level comparison of four popular rifle calibers: .243 Winchester, 6.5 Creedmoor, 7mm-08, and .308 Winchester, utilizing empirical data from controlled ballistic tests. The host, demonstrating high authority in firearms and ballistics, employs professional chronographs and detailed analysis of sectional density and muzzle energy to evaluate performance across various scenarios, including penetration through wood, steel, and concrete, as well as hydrostatic shock.

Quick Summary

Expert ballistician compares .243 Win, 6.5 Creedmoor, 7mm-08, and .308 Win using chronograph data, penetration tests (wood, steel, concrete), and hydrostatic shock analysis. The .308 and 7mm-08 generally showed superior performance in barrier penetration tests, especially against thicker steel.

Chapters

  1. 00:00Introduction and Caliber Lineup
  2. 00:09Test 1: Wood and Steel Backing
  3. 03:21Test 2: Splatter Test (Hydrostatic Shock)
  4. 06:53Test 3: Concrete Wall Penetration
  5. 09:07Test 4: Mild Steel Penetration
  6. 14:13Technical Data and Velocity Summary

Frequently Asked Questions

How do .243 Winchester, 6.5 Creedmoor, 7mm-08, and .308 Winchester compare in ballistic performance?

The .308 Winchester and 7mm-08 generally exhibit superior barrier penetration, especially against thicker steel, compared to the .243 Winchester and 6.5 Creedmoor. Performance varies based on bullet type and test conditions, with copper bullets showing limitations against very hard targets.

What testing methods were used to compare these rifle calibers?

The comparison involved firing into wood with steel backing to assess penetration and energy transfer, water jugs for hydrostatic shock ('Splatter Test'), concrete walls with plywood, and varying thicknesses of mild steel plates to evaluate barrier penetration capabilities.

Which caliber demonstrated the highest average velocity in the tests?

The 7mm-08, specifically with a 120 gr TTSX projectile from an 18-inch barrel, achieved the highest average velocity at 3095 fps among the tested calibers.

What is sectional density and why is it important for bullet performance?

Sectional Density (SD) is a ratio of a bullet's weight to its cross-sectional area, indicating its penetration potential. Higher SD generally means a bullet can penetrate deeper, making it a crucial factor in terminal ballistics and barrier performance.

Related News

All News →

More Training & Techniques Videos You Might Like

More from Banana Ballistics

View all →