338 Lapua vs 300 Win Mag: CLOSER Than You Think On Mild Steel

Published on September 28, 2023
Duration: 8:55

This video compares the .338 Lapua Magnum and .300 Winchester Magnum's performance against mild steel. While both are powerful long-range cartridges, the .338 Lapua demonstrated superior penetration, reaching 0.521 inches into 5/8-inch steel compared to the .300 Win Mag's 0.468 inches. Despite the .300 Win Mag having significantly less muzzle energy, its penetration was remarkably close to the .338 Lapua.

Quick Summary

The .338 Lapua Magnum penetrated 0.521 inches into 5/8-inch mild steel, while the .300 Winchester Magnum penetrated 0.468 inches. Despite the .300 Win Mag having less muzzle energy, its penetration was remarkably close to the .338 Lapua.

Chapters

  1. 00:00Introduction: .338 Lapua vs .300 Win Mag
  2. 00:13Ammunition Specs & Cost
  3. 00:36Rifle Specs & Muzzle Energy
  4. 01:13Steel Sled 4.0 Test Setup
  5. 04:161/2" & 5/8" Steel Penetration
  6. 07:33Penetration Depth & Conclusion

Frequently Asked Questions

How do .338 Lapua Magnum and .300 Winchester Magnum compare in steel penetration?

In a test against 5/8-inch mild steel, the .338 Lapua Magnum penetrated 0.521 inches, while the .300 Winchester Magnum penetrated 0.468 inches. Neither fully passed through, but the .338 Lapua showed greater penetration depth.

Which rifle caliber has more muzzle energy: .338 Lapua Magnum or .300 Winchester Magnum?

The .338 Lapua Magnum tested produced 4,822 ft/lbs of muzzle energy with a 250-grain bullet. The .300 Winchester Magnum produced 3,507 ft/lbs of muzzle energy with a 190-grain bullet.

Can .300 Win Mag penetrate 5/8-inch mild steel?

The .300 Winchester Magnum, using a 190-grain Sierra MatchKing, did not fully penetrate a 5/8-inch mild steel plate. It reached a depth of 0.468 inches and caused significant bulging on the rear of the plate.

What is the cost difference between .338 Lapua Magnum and .300 Win Mag ammunition?

The .338 Lapua Magnum ammunition used in the test was noted to be expensive, costing approximately $6.50 per round. The cost for the .300 Win Mag was not explicitly stated but is generally lower.

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