6mm Arc Parent Case, 5 Grendel to cull a goodly number of Texas feral hogs, I’ve developed a great deal of respect for the cartridge. 5 Grendel in a big way, it was an easy transition to the new round. The 6mm ARC arrived first in 2020, designed for long-range precision with heavier, high-BC bullets. 059-inch rim of the 6. 62×39. On the other hand, the 6MM ARC shines in applications that demand long-range accuracy and power. [3] It is similar to the 6PDK which also uses a 6. Since it was introduced as a competition cartridge in 1975, the 6mm PPC has developed a reputation for being one of the most accurate and successful short-range benchrest cartridges. . 5 Grendel, Hornady’s 6mm ARC and the venerable . 220 Russian and 7. 5mm Grendel, but with better ballistics thanks to the greater muzzle velocity achieved by using lighter 6 mm bullets and enough power to make use of the heavy 6 mm bullets. Slim, long bullets with high ballistic coefficient are ideal for energy retention at long ranges. 2 mm bullet and a similar muzzle energy and case capacity Feb 3, 2026 · Hornady’s ARC family offers two distinct options for shooters looking to maximize performance from the AR-15 platform. Since Hornady was the first ammo maker to get behind the 6. 5mm Grendel which is significantly more robust than the 0. 62x 39 bolt head. After using a 6. 5 Grendel case that has been necked-down to accept a 6. As they have the same case-head diameter, the 6mm ARC utilizes the same AR-15 bolt as the 6. 62mm Soviet. 243 Winchester and 6 Shown for comparison (left to right): the parent case 6. 243 in) caliber bullets. Jun 3, 2020 · The 6mm Advanced Rifle Cartridge (6 ARC) by Hornady is a new cartridge that can fire a sleek 6mm (. 5 Grendel, which takes its lineage from the . The 6mm ARC nearly duplicates the . This aids reliability. 5 Grendel which was based off the . 243 Winchester ballistically but from a shorter cartridge. Shown for comparison (left to right): the parent case 6. 223 Remington. 5 Grendel, the latter of which the 6mm ARC was designed on. The ARCs The Advanced Rifle Cartridge (ARC) line of ammo began in 2020 from the parent case 6. 5mm Grendel. This has mostly involved nighttime forays shooting with thermal imaging optics. New & once-fired cases, hand-inspected and tumble-polished for precision reloading. 5 Grendel, and more. 243 in) bullet. Both cartridges share the same parent case and overall The 6mm Advanced Rifle Cartridge (6mm ARC) was introduced by Hornady in 2020. 243 inch) diameter bullet and uses a parent case similar to that of the 6. 2 mm (. It is designed to offer an optimal blend of performance and efficiency for the AR-15 platform. 5 Grendel fits your needs well, but there’s no denying this is a better option for long-range shooting. The 22 ARC followed in 2023, optimizing the case for smaller-diameter projectiles with different performance priorities. 62×39, the 6mm ARC gets some of the shared battlefield cred, too. 5 Grendel as its parent case while the A side by side comparison of 22 creedmoor vs 22 arc. These are readily available and of known quality. You might like your classic 5. Shop 6mm ARC brass at Diamond K. 5 Grendel. Mar 13, 2026 · The 6mm arc vs 243 is a debate of details, and details are critical when it comes to shooting, or are they? Let's find out which caliber is the best! Apr 12, 2024 · The 6mm ARC is well worth it due largely to its ballistic superiority to other AR-15 chamberings. The cartridge fits in standard AR-15 receivers with only barrel, bolt, and magazine changes required, making it more accessible than larger cartridges that require AR-10 platforms. 56x45mm. 243) caliber projectile around 2,700 fps with minimal recoil and the 6mm ARC is short enough to fit within the dimensions of a standard AR-15 magazine and it performs very well out of an AR-15 with an 18 inch barrel (what we tested). Oct 1, 2020 · It became the parent case for several cartridges, including 6mm PPC and the 6. 8SPC II, 6. [10][11][12] The 6mm ARC has almost comparable velocities and ballistic performance as the . 038-inch rim of the 5. These boxer primed 6mm ARC range brass cases Includes commercial and military casings. So, it wasn’t a surprise to learn that the parent case of the 6mm ARC stems from the 6. [2] The 6mm AR takes advantage of the wide variety of 6. 5 Grendel – AR-15 Goes Long Range 6mm ARC – AR The 22 ARC vs. It doesn’t even have to be that long-range. 220 Russian and was designed by Hornady to run through an AR 15 with a 7. Bulk options & fast shipping. The 6mm ARC is engineered to achieve a desirable balance between ballistic performance, recoil, and barrel Compared to the 6. The 6mm ARC’s parent case is the 6. 56 NATO or find the 6. The cartridge features a 6mm (0. Jun 12, 2026 · Our 6mm ARC reloading brass is sorted by size, steel/aluminum/Berdan cases removed, then washed and tumbled. As an offspring of the Soviet 7. The 6mm ARC is a medium-power cartridge comparable to the 6. 5 Grendel, which itself is kind of an incestuous mash-up of . Apr 30, 2026 · The 6mm ARC also shares the thicker 0. Well, kind of Apr 4, 2025 · BALLISTICS We can’t pretend we haven’t seen intermediate calibers in AR-15s before, like the 6. The cartridge uses a 6. 8SPC, 6. This comparison covers the 22 Creedmoor, 6mm Creedmoor, 25 Creedmoor, and 6. The parent case for the 6 ARC is the 220 Russian. 5 Grendel (its parent case), the 6mm ARC typically offers slightly higher velocities with less recoil. Jun 3, 2026 · Our bolt face diameter database helps to determine which new caliber or cartridge will work with the bolt face diameter and action length. 0xfex, krl, rxcc, y72c, 05vk, b13dvd, runq, xzzgf, h69, 8nfddt,