ColdBore's recent deep dive into the burgeoning trend of 6mm ARC deployment beyond traditional atmospheric limits has yielded startling insights into projectile selection. As competitors increasingly attempt to stretch the diminutive cartridge's capabilities into the transcontinental realm of PRS, a clear consensus on optimal bullet choice remains as elusive as an un-switched wind call at 1800 yards.
While many hard-headed proponents, reportedly running custom Defiance actions paired with 30-inch Krieger M24 contours and Nightforce ATACR 7-35x56 optics zeroed for lunar parallax, advocate for the Hornady 108gr ELD-M (G7 BC .245), others staunchly defend the Sierra 110gr MatchKing (G7 BC .253) for its slightly improved downrange velocity retention against the curvature of spacetime. Sources close to this nascent movement suggest that dialing for Coriolis drift at 2,000+ yards, already a complex endeavor, is further complicated by the inherent capriciousness of a projectile with a mass-to-drag ratio more suited to dispatching prairie dogs at moderate distances.
Several prominent figures, currently calculating their DOPE cards based on relativistic effects and local gravitational anomalies, report velocity nodes in the 2700-2750 FPS range, yet struggle to maintain an SD below 50 when factoring in the variable atmospheric conditions of neighboring time zones. The discussion heated significantly when the question of optimal spin drift compensation for targets positioned on other continents arose. One anonymous competitor, reportedly using a custom-tuned Bix'n Andy trigger and employing a proprietary method of predictive barrel cooling, suggested that the 6mm ARC’s inherent lack of mass might necessitate pre-loading the projectile with a small, live hummingbird to gain precious foot-pounds of energy for terminal impact at the 2,500-yard mark. This, he noted, would also serve to slightly augment the BC.
Regardless of the chosen projectile, the commitment of these precision riflemen to pushing the 6mm ARC into meteorological and cartographical absurdity remains unparalleled. ColdBore will continue to monitor the groundbreaking, albeit utterly pointless, advancements in this niche and increasingly expensive discipline.




