Videos tagged with IMR 4227

This video details a reloading and range test of 135gr Sierra Varminter bullets in .300 Blackout. The host explores IMR 4227 and Winchester 296 powders, encountering significant pressure signs with Win 296 and cycling issues with IMR 4227. Bullet setback due to insufficient neck tension was identified as a major accuracy impediment.

This YouTube video focuses on testing powder-coated bullets specifically with IMR-4227 powder in a 300 Blackout firearm. The content appears to be a range test or evaluation of this ammunition loading, likely intended for viewers interested in handloading or optimizing their 300 Blackout performance.

This YouTube video, "Loading 300 Blk - ep 29 - 200gr Sierra Match King," focuses on the reloading process for 300 Blackout ammunition. The episode specifically details the use of 200-grain Sierra Match King bullets and two types of gunpowder: IMR-4227 and IMR-4198. The description also highlights that the reloading is for subsonic 300 Blackout rounds, indicating a focus on suppressed shooting or specific ballistic performance.

This YouTube video, titled "Loading 300 Blackout - ep 4 - Supersonic load workup for 168gr A-Max", focuses on the reloading process for the 300 Blackout cartridge. It specifically details a "load workup" for supersonic ammunition using 168-grain Hornady A-MAX bullets and Winchester 296 and IMR 4227 powders. The video is part of a series on loading 300 BLK.