300 BLK - Powder Coated Bullets with Winchester 296

Published on March 9, 2017
Duration: 10:03

This video details a systematic test of Winchester 296 powder for 300 Blackout reloads using powder-coated bullets. The presenter aims to identify if specific powders contribute to lead and fouling buildup in the chamber, causing cycling issues. Both supersonic and subsonic loads were tested to evaluate function and reliability.

Quick Summary

This 300 Blackout reloading test investigates Winchester 296 powder's performance with powder-coated bullets, aiming to resolve chamber fouling issues. Loads included a 160gr supersonic at 2.35" OAL with 15.5gr W296 and a 202gr subsonic at 2.1" OAL with 9.0gr W296. The powder performed well in this test, showing good function and minimal fouling.

Chapters

  1. 00:00Introduction to 300 Blackout Powder Test
  2. 00:14Previous Fouling Issues Explained
  3. 00:40Powder Testing Methodology
  4. 00:50Supersonic vs. Subsonic Bullet Specs
  5. 01:14Load Data: 160gr Supersonic
  6. 01:25Load Data: 202gr Subsonic
  7. 02:35Initial Paper Target Shooting
  8. 03:16Supersonic Function Check
  9. 03:22Subsonic Function Check
  10. 04:05Shooting with Suppressor
  11. 04:12Supersonic Plate Shooting
  12. 05:05More Supersonic Plate Shooting
  13. 06:05Subsonic Plate Shooting
  14. 07:19Subsonic Plate Shooting (90 Yards)
  15. 08:06Overall Functionality Summary
  16. 08:23Powder Testing Recap & Bafflement
  17. 09:19Future Powder Testing Plans

Frequently Asked Questions

What is the primary problem being addressed in this 300 Blackout reloading test?

The main issue is significant lead and fouling buildup in the chamber when using powder-coated bullets in 300 Blackout, which prevents rounds from fully chambering and causes cycling failures. This test aims to determine if specific powders contribute to this problem.

What specific loads were tested with Winchester 296 powder for 300 Blackout?

The test included a 160-grain powder-coated bullet loaded to 2.35 inches overall length with 15.5 grains of Winchester 296 for supersonic rounds, and a 202-grain powder-coated bullet loaded to 2.1 inches overall length with 9.0 grains of Winchester 296 for subsonic rounds.

What were the results of testing Winchester 296 powder with powder-coated 300 Blackout bullets?

In this specific test, Winchester 296 performed well, with both supersonic and subsonic loads cycling the firearm reliably and without significant fouling issues. This contrasts with previous experiences the presenter has had with other powders.

Which powders have been previously tested for 300 Blackout with powder-coated bullets?

The presenter has previously tested IMR 4198, Lil' Gun, IMR 4227, and Accurate 1680. None of these powders caused the severe fouling issues that were experienced in earlier videos.

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