-
Having trouble using the site?
Contact support
Coup De Grâce, New Action from American Rifle Company, $899 WOW!
- Thread starter karagias
- Start date
I have two and they are awesome!The easy button answer would be:
M-BRACE SCOPE MOUNT
www.americanrifle.com
With as attractive a price point as he's offering there are going to have to be limits on options IMO.
I’m thinking a couple LA hunting builds, 30-06 and/or 7mm rem mag
Have a nuc 223 build and an arch 6.5CM barreled action I still need to build
I'm thinking LA myself as well. 300 Norma Imp and maybe a big 7
I'm just waiting for the final saybon the long action and what needs to be done. I called and talked to them and the long action wasn't finalize yet. The cone breech and aw mags for long action didn't sound 100% more like flat breech and acis mags would work great but waiting to hear from them 100% to clarify
Quick question. I'm looking to do my first custom build. Probably 7prc or something similar but would like to have a second barrel spun up for a plinking rifle. Would the cone breech for these barrels help with feeding of sa cartridges like 6cm or something similar? Not sure if that would even work with long action. Any thoughts?
224 Valkyrie / 8.6 Creedmore and maybe a long action in 300 PRC.
Hello Hide! Long time follower, first time posting. As many have previously stated, this new action has many features of what I would consider to be the perfect rifle action. There are, however, two features that I would consider highly desirable in this action that have been mentioned earlier in this thread, but not directly addressed. To me, this action is begging to be used in a switch barrel configuration, alternating between competition and hunting. As such, the ability to use extended length Wyatt's boxes/ M5 Obendorf bottom metal, as well as AI and AW mags, would be a huge benefit. Also, as a switch barrel, the option to have a true quick change set screw system, like the Terminus Zeus, would also be a nice option to have. You would still be able to use regular shouldered barrels, but have a quick change cut barrel if you desire. I understand that cost and production time may not make this a possibility, but I think adding these options would make the Coup de Grace the most feature packed action on the market today. Ted, your engineering prowess is well known. Whatever action you offer, I'm sure it will be the among the best of the best out there. Either way, count me in!!
You’ll never see Ted drill a hole in the tenon of his action.
With a vise and an action wrench, every action is quick change. Then you have the added benefit of 100+lb/ft of torque.
With a vise and an action wrench, every action is quick change. Then you have the added benefit of 100+lb/ft of torque.
Last edited:
quick change barrels make no sense to me. barrel vice and action wrench/torque wrench if you so desire
as far as hunting goes he did say they have a lighter option planned. Hawkins mostly eliminated the need for running a wyatts box/obendorf anymore as well
as far as hunting goes he did say they have a lighter option planned. Hawkins mostly eliminated the need for running a wyatts box/obendorf anymore as well
Especially when you can just cut AI style wrench flats near the muzzle and use a crows foot torque wrench… makes it easy enough for sure without redesigning the action
I run my gen 1 nucleus with hand tight barrels. Just give them a hard pop twist at the end and haven't had any problem with headspace going out of spec or them starting to back off. I check to verify it's tight at the same time I verify my suppressor is still tight.
I run a gen 2 nucleus that I have as a switch barrel setup for different cals or purposes but never switch at the range. I think if you want something like that better to go for the actions that offer that fast quick change setup or get the crow foot and barrel wrench flats on barrel. Which is a very tempting setup.
Nothing big. Just short action rounds. I'm shooting 224 valkyrie, 308win, 6 creed, 223. When I get this action I'll be using my barrel vice to tighten the barrels for my 7-300prc and 338nm.
, I’ll have to try this outI for a while always brought headspace gauges just to be sure and slowly worked my way up to being able to feel confident and comfortable with running it like that.
I run 150ft/lbs because that’s the max on my ARC action wrench.
Tikkas are very good predictable factory guns. They are estimated to be over 300ft/lbs.
Ian Kelbly no doubt builds very accurate and precise rifles. He says no less than 150ft/lbs.
Mike at TacOps no doubt builds accurate and precise rifles. He estimates his torque at or more than 500ft/lbs.
Tikkas are very good predictable factory guns. They are estimated to be over 300ft/lbs.
Ian Kelbly no doubt builds very accurate and precise rifles. He says no less than 150ft/lbs.
Mike at TacOps no doubt builds accurate and precise rifles. He estimates his torque at or more than 500ft/lbs.
Achieving Critical Fastener Torque
Threaded fasteners require the proper amount of tightening in order to achieve the desired clamping force to secure components. This may involve either reaching a specified torque value or a combination of torque plus additional angle tightening. Either way, the goal is to obtain proper clamping...
www.autoserviceprofessional.com
Both Mike and Tikka are doing interesting things to achieve that. I’m not sure you can do that to a run of the mill, off the shelf action without specific material preparation.
A 1.06” 60° thread doesn’t need any prep to hit 150ft/lbs. A little grease on the shoulder is all I use.
500 ft/lbs is insane. I do calibration and maintenance for a living and to even get remotely repeatable readings takes a machine to verify a torque value like that.
Not verified, but they max out their torque wrench, and a big burly dude reefs on a 5 foot cheater bar.
Quick change is more desirable for me as a condo dweller with no access to a work bench / vise.
-Stan
I love Ted...he's a total trip and very much like a lot of engineers I worked with in the telcom equipment industry.
Very interesting guy
I emailed WTO about the switch lug and was told they haven't had one in hand but their ARC switch lug should work for it.
Not sure what the added benefit is of 100+ lb/ft of torque. My hand tight Zeus has been flawless and a great feature I have used repeatedly, especially when I clean my barrels.
Thread load is the first 3-4 threads closest to breach pulling against the shoulder. The only way to get all threads to bear the torque load would for them to be tapered progressively larger closer you get to shoulder. Anything more than 80'# is unnecessary and going to benefit very little to nothing.
Looks like Ted will have the video up in a little bit
Barrel Torque
I normally recommend torques of at least 100 lb-ft, 150 is better, because I don’t what barrels coming loose on large caliber, lighter weight guns, like hunting rifles. Hard-to-diagnose accuracy problems are also possible as a result of low torque. More torque is just cheap insurance.
As far as bolted joints go, a barrel-receiver joint is quite stiff because the thread is quite large in diameter and very short. Therefore, even high torque results in low elastic stain. The elastic strain keeps the joint from coming loose because it maintains friction between the receiver and the barrel. This is why mass-produced factory rifles, i.e. Tikka, are shipped with barrels screwed on really tight. If you’re making 100,000+ rifles per year and you want exactly zero barrels coming loose, you achieve that by applying a high torque resulting in high elastic strain, and maybe even a little bit of plastic stain, to maintain joint friction.
If Tikka shipped 100,000 rifles with barrels torqued to only 80 lb-ft, a customer service debacle would ensue as thousands of barrels would loosen resulting in increased headspace, case head separations, recalls, and general ass pain.
The thread of a barrel receiver joint can handle enormous torques because its big. I offer the following example to calibrate your thinking. The bolt manufacturer Holo-krome recommends about 1080 lb-ft for a 1” diameter, fine-pitch, grade 8 socket head cap screw. Our receivers could easily handle that if they could be held in a way that would not result in damage during tightening. The barrels being considerably softer than a grade 8 screw might not get there but they wouldn’t be far off.
Anyway, now you know why we recommend what we do. We don’t want headaches.
Ted
I normally recommend torques of at least 100 lb-ft, 150 is better, because I don’t what barrels coming loose on large caliber, lighter weight guns, like hunting rifles. Hard-to-diagnose accuracy problems are also possible as a result of low torque. More torque is just cheap insurance.
As far as bolted joints go, a barrel-receiver joint is quite stiff because the thread is quite large in diameter and very short. Therefore, even high torque results in low elastic stain. The elastic strain keeps the joint from coming loose because it maintains friction between the receiver and the barrel. This is why mass-produced factory rifles, i.e. Tikka, are shipped with barrels screwed on really tight. If you’re making 100,000+ rifles per year and you want exactly zero barrels coming loose, you achieve that by applying a high torque resulting in high elastic strain, and maybe even a little bit of plastic stain, to maintain joint friction.
If Tikka shipped 100,000 rifles with barrels torqued to only 80 lb-ft, a customer service debacle would ensue as thousands of barrels would loosen resulting in increased headspace, case head separations, recalls, and general ass pain.
The thread of a barrel receiver joint can handle enormous torques because its big. I offer the following example to calibrate your thinking. The bolt manufacturer Holo-krome recommends about 1080 lb-ft for a 1” diameter, fine-pitch, grade 8 socket head cap screw. Our receivers could easily handle that if they could be held in a way that would not result in damage during tightening. The barrels being considerably softer than a grade 8 screw might not get there but they wouldn’t be far off.
Anyway, now you know why we recommend what we do. We don’t want headaches.
Ted
And just like that, everything that intimidated me about the Archimedes is no longer an issue.
Amazing job @karagias!
-Stan
Similar threads
