Excessive Headspace Solved: Peterson Longs (7Rem & 300 WM)

This entry details an experimental approach to testing the real-world viability of video game firearm trick shots, led by Mike (Garand Thumb), a retired Air Force Special Warfare operator. The guide covers techniques like the 'dropshot,' 'dolphin dive,' 'peeker's advantage,' dual-wielding, and 360-degree spins, evaluating their practical effectiveness and safety on an outdoor range. The assessment highlights the significant difference between virtual and real-world firearm engagements.

This video from Deuce and Guns details three primary dangers associated with surplus ammunition: squib loads, improperly reloaded ammunition, and ammunition that has been tumbled. It explains how a squib load can lead to a catastrophic firearm failure if a second round is fired, how incorrect powder in reloads can cause over-pressure, and how tumbling can alter powder burn rates, potentially creating dangerous pressure spikes. The instructor emphasizes caution when using older or improperly stored ammunition.

This video provides an expert-level guide on validating rifle trajectory and calculating true muzzle velocity using the G7 Ballistics Program. The process involves setting up a detailed load profile, configuring environmental and sighting data, generating a drop chart, and then performing live-fire validation at extended ranges (600 and 950 yards). By measuring actual bullet impact and inputting this data back into the G7 software, users can precisely determine their rifle's true muzzle velocity, leading to more accurate ballistic solutions and custom turrets. The instruction is delivered with high authority, demonstrating professional-level knowledge.

This video explains the critical role of terminal velocity in achieving maximum effective range for long-range shooting. It highlights that most bullets require at least 2,000 ft/s for proper expansion and wound cavity creation. The presenter uses a comparison between a Spitzer and a VLD bullet in 7mm to demonstrate how bullet shape significantly impacts downrange velocity and thus terminal performance at extended distances.

This video details the comprehensive manufacturing process of brass rifle casings by Peterson Cartridge. It covers the transformation of raw brass cups through multiple drawing, annealing, washing, heading, trimming, and tapering stages. The process emphasizes precision, quality control through extensive automated and manual inspection, and specialized treatments like neck re-annealing and anti-tarnish coating to ensure match-grade performance.

This guide details essential brass preparation steps beyond basic decapping and sizing for improved reloading accuracy. It covers cleaning, primer pocket uniforming, neck chamfering and deburring, and neck brushing. The video emphasizes that even new brass can benefit from these processes to ensure consistent bullet seating and optimal performance. The presenter, F-class John from Ultimate Reloader, highlights chamfering and deburring as critical steps that should not be skipped, regardless of time constraints.

This video debunks the myth that solid copper bullets require extremely high velocities for effective hunting performance. Through ballistics gel testing and analysis of 7 PRC loads using Barnes TTSX and LRX bullets, Gavin Gear demonstrates excellent expansion and weight retention across a wide velocity range, including lower velocities equivalent to longer ranges. The testing highlights the versatility and effectiveness of modern monolithic copper projectiles for various hunting scenarios and legal requirements.

This video details extreme pressure testing of the 6mm ARC cartridge using both a bolt-action rifle and an AR-15 platform. The experiment pushes the limits of Alpha Munitions brass with 8208 XBR powder, achieving velocities exceeding factory specifications and even 6 Creedmoor. The testing culminates in destructive attempts using a fast-burning pistol powder in an AR-15, demonstrating the significant forces involved and the potential for catastrophic failure. The presenter, Gavin Gear, emphasizes that these tests are for research only and should not be replicated due to extreme danger.