Videos tagged with Accurate 1680

This guide details the process of handloading .300 Blackout ammunition using Hornady 190gr SUB-X bullets with Accurate 1680 and Vihtavuori N120 powders. It covers case preparation, OAL determination, powder charging, bullet seating, and essential testing phases including velocity measurement, stability assessment, ballistic gel expansion, and final accuracy testing. The instruction comes from an experienced reloader with a deep understanding of internal and terminal ballistics.

This video provides a comprehensive guide to reloading 7.62x39 ammunition for an SKS rifle, emphasizing critical steps like determining correct bullet diameter through bore slugging and preparing brass with custom expander mandrels. It details load development using various bullet weights and powders, addresses potential SKS slam fire concerns, and offers practical advice on bullet seating, crimping, and analyzing fired brass. The instruction is delivered by a knowledgeable individual with hands-on experience in reloading and firearm maintenance.

This guide details a comparative analysis of Forster, Lee Precision, and RCBS sizing dies for 300 Blackout ammunition, as presented by Johnny of Johnny's Reloading Bench. The expert-level instruction focuses on identifying dies that provide optimal neck tension and prevent bullet setback, crucial for both accuracy and feeding reliability. The process involves meticulous measurement of expander balls, case stretch, and headspace, followed by live-fire testing to evaluate accuracy and velocity.

This video focuses on testing powder-coated bullets with Accurate 1680 powder in a 300 Blackout firearm. The content likely involves a range test or evaluation of this specific ammunition loading combination.

This video details a comprehensive test of the 240gr Sierra Match King bullet for 300 Blackout subsonic applications. The instructor, Johnny, meticulously tests handloads using Accurate 1680 and Hodgdon CFE Black powders in both an 8.5-inch SBR and a 16-inch rifle, both with 1:8 twist barrels. The testing includes initial stabilization checks, velocity measurements, and detailed analysis of group sizes and performance to identify optimal loads for subsonic velocities around 1050 ft/s. The instructor also compares the performance of handloads against factory DT Tactical ammunition.

This video details a comprehensive test of 225gr Hornady BTHP Match subsonic 300 Blackout ammunition across two different barrel lengths (8.5-inch SBR and 16-inch rifle) using Accurate 1680 and Reloader 7 powders. The instructor meticulously outlines the process of developing and testing loads, focusing on velocity, function, and accuracy to identify optimal subsonic performance.

This video details an experiment to address powder position sensitivity in 300 Blackout subsonic loads using Cream of Wheat and cotton as case fillers. The instructor tests various amounts of Cream of Wheat and packed cotton, documenting the significant fouling and cycling issues encountered with both materials. The experiment concludes that neither Cream of Wheat nor cotton are viable case fillers for reliable firearm function, leading to a recommendation for heavier bullets for subsonic applications.

This video investigates significant velocity variations in 300 Blackout subsonic loads, specifically 147gr with Accurate 1680 powder. The presenter replicates a commenter's findings where powder position within the case dramatically affects muzzle velocity, with swings up to 200 ft/s observed. This phenomenon is linked to inconsistent ignition, particularly in low-charge-weight, high-capacity cartridges. The testing involved comparing CCI BR4, SNB, and Federal AR Small Rifle Match primers, shooting rounds with powder settled horizontally versus vertically (powder towards the primer).

This video details the process of reloading 300 Blackout subsonic ammunition, focusing on accuracy tests with Hornady A-Max 208gr and Palmetto Projectiles. The instructor demonstrates reloading steps including brass preparation, powder charging with specific loads for Accurate 1680, Reloder 7, and IMR 4198, and bullet seating. The results highlight significant accuracy differences between jacketed and lead bullets, suggesting potential issues with lead bullet diameter for the firearm's twist rate.