For example, the data in the Hornady 11th Edition Manual for an 18 in (457 mm)-barrelled AR-15 platform firearm was on average 200-300 ft/s (60-90 m/s) less than the data for the 24 in (610 mm)-barrelled CZ 527 bolt action rifle. All gunsmithing procedures should be carried out by a qualified and licensed gunsmith at their own risk. There are 6ARC bolt guns out there. To get started, click the link below to visit mymagnow.com and learn how to access your digital magazine. Factory match rounds start at 155 grains and go up. The 6.5 Creedmoor shoots 6.5mm/.264 class projectiles while the 6mm Creedmoor is necked down to shoot 6mm/.243. An eighteen-inch barrel, maybe even a. Posts: 38 Threads: 10 Joined: Aug 2020 #1. Share. Modern Outfitters MC7, Proof Research 22 6CM, Bushnell Elite Tactical XRS 4.5-30, Hornady 108 grain ELDM. Reduced recoil minimizes flinching and enables shooters to see their hits or misses so they can correct for subsequent shots. Its almost boring. shoots the same cadre of 0.243-inch bullets as the .243 Win. Accordingly, the firm introduced two loads. 6mm AR (L), 6mm BR (R) Good luck, John 1shot Mar 4, 2013 #4 Team Hornaday is the master, bar none. Supporter. In an effort to salvage the .244 Rem., in 1963, Remington changed the name of the round to 6mm Remington and the barrel twist rate to 1:9 inches. On this Wikipedia the language links are at the top of the page across from the article title. All of the design criteria that went into the 6.5 Creedmoor that make it a top performer were also used in the development of the 6mm Creedmoor. 6.5 Grendel vs. 6mm ARC Ballistics. Unlike the WSSM, the Hornady 6mm ARC was engineered around a long, high B.C. Thread Modes. If this rifle is any indication all it took was a barrel, bolt, and magazine swap. Its a 6mm cartridge similar to 6.5 Grendel, built for the AR-15 platform, Its optimized for bullets in the 103 grain 110 grain range, Its got more velocity and less recoil compared to 6.5 Grendel, It shares the same parent case with 6.5 Grendel: The 220 Russian, Its capable of launching a 6mm 108 grain projectile approximately 2800 FPS from a 24 barrel, BARREL: 20, 1:7.5 twist, 6mm ARC, MT 416SS, SBN, MUZZLE: MUZZLE: SV Brake, threaded 5/8-24, GAS PORT LOCATION: Rifle Length with SLR Adjustable Gas Block, RECEIVER: Forged 7075-T6 AL M4 type upper, AR15 type lower, FINISH: Cerakote Receivers and Hand Guard, Find a cartridge similar to 6mm ARC thats supported in the, Determine the 6mm ARC case capacity for my lot of brass (H2O method), Adjust Quickload model for case capacity and any other factors, Model loads looking at pressures and velocities (using 6mm PPC load data as a backup sanity check), It shares the same parent case with 6mm ARC (the 220 Russian), Its case capacity is very close (1.9 grains of H2O different), Likely in reference to a 24-ish test barrel, No AR gas system present to reduce velocity, Start with observed 20 velocity data for my H-4895 load (2,631 FPS), Look at the QuickLoad projected velocity difference between a 20 and 24 barrel, Add the velocity difference to the actual measured velocity, Account for ~1.18% reduction in velocity (calculated from my 224 Valkyrie AR-Bolt side by side testing) due to the AR-15 gas system, I had limited components available to test, results could get better from here (more velocity with less pressure), These loads may be hotter than what will function reliably in a typical AR-15 (and may not be safe), I will follow up with testing of Hornadys factory ammunition with the 108 grain ELD-M bullet. Should I consider another upper? All testing was completed using 108 grain ELDM from Hornady. .458 Winchester Magnum History: The Complete Story, 6.8 Western Ammo Options: The Load of Long Yardage, A World Record Attempt: Practice Round and Media Day, Interview with Israeli Defense Forces, Part 1. Most problems outside a war zone are handled nicely with 20 rounds and a couple of spare magazines. Its small, and its availability is limited, but its accuracy and ballistic performance really qualify it for the Great category. 6mm ARC has the potential to be the most versatile cartridge of all time for a few reasons: (1) 6mm ARC can handle projectiles anywhere between 55 and 115 gr. These developments are interesting, and the supreme accuracy achieved by several of the wildcat cartridges make them worthy of mention here. bullets in .243" help make the light-kicking, short Hornady 6mm ARC ballistically superior to the 308 Win., 6.8 SPC. The release of the new Hornady 6mm ARC (Advanced Rifle Cartridge) supports the perception that gun and ammo makers are engaged in a race to the bottom. But I wanted to get some real-world results with my new CMMG Endeavor 300 6mm ARC AR-15 published as soon as I could, and therefore embarked on an exciting journey. It may not display this or other websites correctly. They still do. Do not attempt any of the processes or procedures shown or described on this website. Maybe in a rural area where ranges stretch out, but movement here will be a rarity. The 6mm ARC was designed to match specific DOD requirements while fitting in the AR15 platform. I got hold of the barrel and some ammunition, the rest was already around and was mounted in a proven build, my Seekins Precision NX15. F-Class A to Z with Erik Cortina + Special Guest! .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; height: auto; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }, Ultimate Reloader LLC / Making with Metal Disclaimer:(by reading this article and/or watching video content you accept these terms), This section is from my 6mm ARC Announcement Post. There are probably better choices in a bolt gun, The 6 BR Rem has been around for a while but not fifty years, yet. Savage already offers a few more inexpensive options in 6mm ARC though defiantly not a mini action. Poll: What Progressive Reloading Press Do You Use Most? ZevTech, 16 Proof Research .223 Wylde barrel, Leupold Optics Mark 6, 3-18 with a David Tubb DTR reticle and Black Hills 77 Grain TMK. 6 BR REM, not 6.5. As a follow-up exercise, I plan to use QuickDesign software to create a more accurate model for the 6mm ARC. It has had moderate success in various target venues. Honey Badger, XM2010, C22, R4, MSR, CSR, AAC, BARNES BULLETS (https://www.youtube.com/watch?v=ykTfyrMiXps). The newest 6mm factory round is the recently announced 6mm ARC (Advanced Rifle Cartridge). Contact ultimate reloader by clicking here. Your email address will not be published. 6mm ARC The newest 6mm factory round is the recently announced 6mm ARC (Advanced Rifle Cartridge). Our real questions are (A) What is the 6 ARC, (B) What does it do, and (C) is it doing something better than what you already own and love? Facebook; Twitter; Pinterest; Related Articles. Twist rate was one turn in 10 inches, which handled the 100-grain deer bullets nicely. This is because loading data given in some manuals such as the 11th Edition Hornady Reloading Manual[8] ,for example, has two sets of data. This is only a slight victory, however. SPC; the 300 AAC Blackout, 350 Winchester Legend and 458 Bushmaster. There is a lot of hoped for or imagined history related to the 22 BR and 6 BR cartridges. Dave Bahde Dr. WT? All Shooting Times subscribers now have digital access to their magazine content. The bullet diameter of each caliber is the same at .243". Some may scoff at the old-fashioned roundnose bullet, but it is a terrific game bullet, and I have never had to use a second shot to down a deer. Outside a few very special special units, the military gets whats issued. 6mmBR is not the easy button it is the easiest button. We show you how. As their names imply the biggest difference between the 6mm Creedmoor and the 6.5 Creedmoor is the bullet class. Blue collar reloading had 25 boxes of brass right now. Posts. That was the era of increasing muzzle velocity. You may know one or two more. Powder selection is easy: Just stick with CFE 223 and all will be right with the world. I fall into the latter category. One other fine 6mm round is the .240 Weatherby Magnum. Advantage, magnum. Lower velocity means less flame and heat for longer barrel life. The Hornady 6mm ARC takes the 24-caliber into record territory the slowest muzzle velocity of any commercial cartridge propelling .243 bullets. After forming some cases I shot Berger 105 hybrid targets over 27.5 grs. Making those tweaks often feels like creating a powder that doesnt really exist. I had a 20 AR-15 to test with, so I had to do some math :). If you have any doubt how well Hornady does this look no further than the 6.5 Creedmoor. That wont change and logistically the 6 ARC is still at baby steps. Poll: What Rifle Cartridge Do You Reload Most Often? Introducing the Silencerco SCO15 Lower Do We Need Another AR-15 Lower? Another cartridge that deserves mention is the relatively new 24 Nosler. Obviously, they are not nearly as popular as the 6mm hunting cartridges. The benchrest crowd has not been overlooked in the 6mm derby, and one cartridge literally rewrote the record book. This is a much more confidence inspiring correlation with regards to safety and predictability. Doesn't the 6mm ARC have a smidge more powder capacity over the 6mm BR? They run the gamut from tiny benchrest numbers to those with larger cases that essentially duplicate many factory rounds. The Hornady manual states that this second set of data should not be used in gas-guns. Five shot rapid-fire was not bad. After entering my measured capacities, measured muzzle velocity with 27 grains of VARGET under the 108 ELD-M of 2554 is now within 2 FPS of Quickloads estimated 2552 FPS. Dropped on my M16 lower doubles and triples stayed on a full-sized silhouette out to 25 yards, stretched doubles to 50 yards. Or anything? Reply. The ARC seems to be knocking on the heels of a BR. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. You can boost the performance of the 6mm ARC in a bolt action quite easily. Remington surmised that the .244 would be used mostly as a varmint cartridge, with only an occasional application on deer-sized game, so the initial factory ammo was loaded with a 75-grain bullet. Those I know that can pick their own stuff are still proving out the 224V and many like it, not sure the differences are enough right now, time will tell. Excessive recoil, debilitating blast, and marked overpressure remain its claim to fame, thereby making it unsuitable for comparison for most of us. Using 26 to 28 inch barrels in bolt guns, 6ARC may be easy for those that do not reload or have primers. Low velocity coupled with relatively light bullets reduces recoil. was introduced in Remingtons Model 722 short-action bolt gun, and while the Model 722 was a very accurate rifle, it was rather plain. Like the grendel though you probably don't want to run high pressures on an ar bolt though. Mid-20th Century 24-calibers shoot much faster than the new Hornady 6mm ARC, but are they ballistically better? The Model 70 .243 Win. Tests varied from 100-1100 meters (110-1200 yards, for the metrically challenged). I started out a skeptic, not terribly excited about the 6mm ARC. It uses the ever-effective Hornady 100-grain RN InterLock with H4350 powder. The high B.C. What does all this mean? For this load, I shot a group of 3 shots on the chronograph, and observed the following: (better chrono data coming in future stories, I had limited components and time). Their 106 grain TAP round looks interesting with a .580 G1 BC but not available right now, will have to come back later on that. pathfinder76 #14942491 06/04/20. Mikey Hartman, Lt. Col. The factory 105s shot at 2662 FPS with an SD of 11 as measured by a Labrador. The 6x45 is the .223 Rem. Guns & Ammo's first sample rifle chambered in 6mm ARC was a Ruger AR-556 MPR with an 18-inch barrel. The Remington 600 action that it came off was set up as a single shot rifle, no magazine assembly, and the Fajen stock was inletted just deep enough for a 1/2" thick aluminum platform to lay the cartridge on. [9] The 6mm ARC utilizes the same bolt head size as the 6.5mm Grendel, and 6.5mm Grendel-compatible AR-pattern box magazines have also been used successfully with the 6mm ARC. You are here: Home > AR Parts > AR-15 Parts > AR-15 Upper Parts > AR-15 Barrels > 6MM ARC AR-15 Barrels 6MM ARC AR-15 Barrels Showing 1 - 16 of 16 items Sort By: Go Page of 1 L. to R. are 223 Rem., 6.5 Grendel, 6.8 Rem. Hornady is an obvious first choice for selecting 6mm projectiles to load the 6mm ARC with. The biggest differences between the 6mm PPC and the 6mm ARC are the shoulder angle (30 for 6mm PPC, and 40 for 6mm ARC), and the base-to-datum spec for the shoulder (6mm ARC is pushed back further). 75 GRAIN BULLETS SECTIONAL DENSITY: 0.181 DIAMETER: 0.243" 75 gr. It would seem to make a dandy handgun round as well. Posts: 11,077. Just looking for a ball park difference. Give a Gift A fun challenge. Only a few metric calibers have been really popular in the United States6.5mm and 7mmso the Great 6mms are relatively few in number. Availability of factory ammo may be a plus for the 6ARC. I doubt that the book on the Great 6mm cartridges is closed, and future developments may add new chapters, to the delight of many shooters. 6.5 Creedmoor vs. 6.5 PRC: Which is Better? | 0 comments. muvef Junior Member. Factory ammunition at normal prices (if that exists anymore) suitable for defense, duty, target, and hunting is more available than similar calibers after decades of use. Probably the most recoil came out of the 6 Creedmoor. Before there were scopes or red dots there were iron sights. The pair developed the .22 PPC in 1975, and the 6mm PPC followed in 1987. Cold shots fell inside half an inch of the center a couple cut the red center dot. As such, SAAMI maximum average pressure is set at a relatively mild 52,000 psi. GD. I wasn't going to take a shot at more than 50 or 60 yards and would take my time before I squeezed the trigger. Second, it was chambered in the delightful Winchester Model 70 Featherweight, which was a major factor in the .243s huge success. The rim diameter of the 6mm ARC is 0.441 inches, while the 243 is slightly larger at 0.471 inches. The 6mm ARC is basically the 6.5 Grendel necked down to hold a .243 bullet with the 30-degree shoulder pushed back a smidgen. If you want to shoot at distance with your AR-15, this is the cartridge. This means you have the option to read your magazine on most popular phones and tablets. But no matter, new is new. I tried a test one time after that ladder test, I decided to eyeball the powder amount in the case. Read on! Handloads are easy to prepare, and while my limited use of the .240 Wby. Poll: What handgun cartridge do you reload most often? Consistency remained about the same with 2 or 3 out of five the norm. Once lasers hit the fields, the game began to change. Click here to view the cartridge and chamber print on the SAAMI website. I used the lathe to modify a 6.5 Grendel bushing die and ended up with a 6 ARC die. Im interested in a direct comparison to the 224 Valkyrie and the 6 mm ARC. Does the 6 mm arc not have 30 degrees shoulder angle?is wikipedia wrong? 100-300m: Consistent 100 meter groups in the .60 -.75 inch range, 2.5-3.0 inches at 300 meters were the norm. You are using an out of date browser. Learn more here: http://bit.ly/1G7xXag. Sign up with your email address to receive news and updates. However, I must confess that Hornadys factory loads shoot so well that the reloader is hard-pressed to better them. The rifles Barrett supplied for the DoD are top-notch, but they are just a modified REC-7 DI. I previously tested them in other calibers. The 6mm Creedmoorin the same fashion of its larger counterpartfits those bullets very well. This increased size means the 243 has a case capacity of 53-54.8 gr H2O. However, I would not want to carry it far. Posted: 11/11/2012 6:04:07 PM EST [#2] Velocity with a 105gr bullet from both is 2750 fps. Wildcatters have had a field day with the 6mms, and the list of their creations is long. The Eagle Eye 6.5 Creedmoor shoots a 130gr hybrid projectile with a .295 G7 at 2,960fps from an average 26" barrel. Your email address will not be published. Were going backwards! LMT MWS, 20 224V, Sig Sauer Tango 6, 3-18 MRAD Dev-L using Federal GMM 90 grain SMK and an 18 SS Match 6.8 SPC with 110 Grain VMAX. [citation needed]. All Rights Reserved. Looking at putting together on of lower powder capacity 6mms in an effort to possibly extend barrel life a touch and have a nice smooth/easy shooting gun. I purchased a 6mm ARC barrel from Brownels when they first came available. There is nothing more competitve than a 6BR Norma when the wind is consistent or low. Make sure to watch till the end. No surprise there since it is about the same weight as the 6 ARC and both used Proof Research barrels. Curious? As much as I like shooting my 6 Creedmoor, every builder outside custom shops tells me it is a complete PITA to get to work on a large scale using factory ammunition, a real consideration. .243 bullet for military (combat) applications in modern, autoloading rifles. I have never had a easier caliber to load for. Just pouring powder in and checking it by eye. Here was my strategy to extrapolate my results to the likely scenario of the 24 test barrel: Heres the work-up: (pressure listed is MAX projected, not average). SuperCub. 'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+'://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js,fjs);}}(document, 'script', 'twitter-wjs'); 2023 Copyright 2023 Ultimate Reloader LLC. The 6mm ARC is designed to run in existing in M4 rifle platforms. The 6mm GT easily attains more than 3,000 fps. The problem is that Hornady, which developed the 6 mm ARC, made a slight alteration to the case length so that it would be compatible with very long 6 mm bullets that have a high BC. I don't shoot past 300 and dead is dead. Its 26-inch barrel made the rifle a bit heavy for toting over hill and dale, plus the 1:12-inch twist limited bullet weights to 90 grains or lighter. You can get the 6XC brass in Norma which is very good. The need for a new, uncommon bolt/ face/ assembly kills 6 arc in the real world for bolt guns. Short, relatively fat cartridges concentrate powder near the ignition flame for an even, consistent burn with a tendency to improve muzzle velocity consistency. I therefore feel that Hornadys claimed performance data is feasible. Will it become my 1000 yards rifle, maybe, it is working against the 224V and the jury is still out and will be until I get my hands on their TAP round, Ill keep you posted. Those who are going to like or prefer the 6mm ARC will likely appreciate the 6mm ARC for its utility in either the AR 15 platform & or the mini action bolt action rifles. In between: Everything performed swimmingly between 100-400 meters as they should, once again the ZEV shines here with no recoil and consistent accuracy, almost boringly easy to get hits. The current reincarnation of this round is the 6mm BR Norma, with essentially the same case dimensions. It was essentially the Huntington cartridge, but with a 26-degree shoulder for easier case manufacturing. The .223 75-grain bullet, by contrast, drifts more than 15 inches at that range, and the ARC's advantage becomes more pronounced at longer ranges. Ok from the perspective of one 6mm ARC lover. Who knew wild turkey's were so stupid!? Review: Hornady 6mm ARC. Its a long-distance for any of these and conditions were anything but ideal. Campfire Outfitter . Available in different sizes and red dot ready, it'll fit your needs, whatever they are. The 6mm AR needs to be sized down from Grendel brass, or fire-formed from 6PPC brass. Wait a minute. We're going backwards!