ARC Coup de Grace Builds

#751
My experience with the pivoting handle and a BnA TacSport Pro set around 11oz is that one need not run the bolt like a raped ape to get the pin to fall on closing.

Raped ape combined with a scaled dog could not get the fixed handle to make the striker pin fall.
 
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#754
A diamond one pound and under can experience the dead trigger with the pivoting handle. Ask me how I know. I switched to non pivoting and the problem solved. I’m at 13oz on my diamonds. Owning several Archimedes and starting with a pivoting cdg I can honestly say I’m not sure I’ve ever truly needed the function. I don’t load high pressure nor am I running crazy calibers. Op of asking this question if you want to run under a pound I wouldn’t be worried about getting the non pivoting one.
 
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#755
Simonsza1 said:
A diamond one pound and under can experience the dead trigger with the pivoting handle. Ask me how I know. I switched to non pivoting and the problem solved. I’m at 13oz on my diamonds. Owning several Archimedes and starting with a pivoting cdg I can honestly say I’m not sure I’ve ever truly needed the function. I don’t load high pressure nor am I running crazy calibers. Op of asking this question if you want to run under a pound I wouldn’t be worried about getting the non pivoting one.
Click to expand...
I like the pivoting handle of the Archimedes because it allows for a fairly light bolt lift with a super strong striker spring (I think they’re 26lbs). My Nuke 2.0 I run a 19lbs and it still doesn’t even come close to it.
I run trigger tech 2stage on both my Arch and my CDG at sub 1lbs and never had an issue and I run the bolt really hard. The single stage diamond I run on the Nuke at 6oz, never had an issue either.
I’m still not 100% sold on the CDG vs the Arch … I can’t exactly explain it …
 
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#756
One more for you CDG owners, specifically anyone with the lightweight version. Why is the rear pic rail in such a unique (forward) location? Most split rail actions that I have seen have it located further back, aft of the ejection port. I have to imagine that was a very purposeful design decision for ARC but I haven't read comment about it anywhere.
 
#757
DocAutomatic said:
One more for you CDG owners, specifically anyone with the lightweight version. Why is the rear pic rail in such a unique (forward) location? Most split rail actions that I have seen have it located further back, aft of the ejection port. I have to imagine that was a very purposeful design decision for ARC but I haven't read comment about it anywhere.
Click to expand...
Good question. It looks like that would push your scope way too far forward. That’s what steered me away from it for a lighter weight hunting build and towards defiance anti x with the 75* bolt even though they are a bit overpriced imo.
 
#758
I run the hunter on my my light rifle. With the Hawkins light rings I have to have the rear ring almost touching the turret housing area on my zco to get it back enough. Still need it back a little more and can’t unfortunately. Wish someone would make a light ring with 10mm of offset then it would be perfect.
 
#759
st1650 said:
I like the pivoting handle of the Archimedes because it allows for a fairly light bolt lift with a super strong striker spring (I think they’re 26lbs). My Nuke 2.0 I run a 19lbs and it still doesn’t even come close to it.
I run trigger tech 2stage on both my Arch and my CDG at sub 1lbs and never had an issue and I run the bolt really hard. The single stage diamond I run on the Nuke at 6oz, never had an issue either.
I’m still not 100% sold on the CDG vs the Arch … I can’t exactly explain it …
Click to expand...
💯
If they still made the Archimedes I wouldn’t own any cdg. I always hope if a short action Archimedes pops up in the px I am the first to see it!!!
 
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#761
12.5” .338ARC

2CAA5834-4F67-434F-9FA5-A62166B3AE43.jpeg
 
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#765
New Coup De Grace owner here. I’ve not seen any photos or discussion of the conical breech adapters for flat faced barrels, but I just got mine in last night.

Torqued my original 6.5cm Mausingfield shouldered barrel on to the Coup action, with adapter in place, and all seems to headspace just fine. I’ll be seeing how she runs this weekend, but wanted to post up the adapter pics.
 

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#767
AllenOne1 said:
Do you have clearance between the extractor and the conical adapter? This is the first time I've seen this.
Click to expand...
Me too.

personalbest said:
New Coup De Grace owner here. I’ve not seen any photos or discussion of the conical breech adapters for flat faced barrels, but I just got mine in last night.

Torqued my original 6.5cm Mausingfield shouldered barrel on to the Coup action, with adapter in place, and all seems to headspace just fine. I’ll be seeing how she runs this weekend, but wanted to post up the adapter pics.
Click to expand...
Where did you get the adaptor? I’ve not heard of them before.
What caliber is the barrel?
 
#768
lash said:
Me too.


Where did you get the adaptor? I’ve not heard of them before.
What caliber is the barrel?
Click to expand...
They're $30 on ARC's sight. I just saw them last week & was curious what it looked like.

@personalbest - Thanks for posting and let us know how it works. Please confirm this adapter just locates off shoulder in action & then barrel pins it in place once torqued?
 
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#770
357Max said:
They're $30 on ARC's sight. I just saw them last week & was curious what it looked like.

@personalbest - Thanks for posting and let us know how it works. Please confirm this adapter just locates off shoulder in action & then barrel pins it in place once torqued?
Click to expand...

jabonra said:
www.americanrifle.com

378 Conical Breech Adapter

www.americanrifle.com www.americanrifle.com

www.americanrifle.com

473 Conical Breech Adapter

www.americanrifle.com www.americanrifle.com
Click to expand...

Interesting. I guess that takes away the (incorrect) general impression people have that prefit barrels are not readily available for the CDG action.
 
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#772
357Max said:
They're $30 on ARC's sight. I just saw them last week & was curious what it looked like.

@personalbest - Thanks for posting and let us know how it works. Please confirm this adapter just locates off shoulder in action & then barrel pins it in place once torqued?
Click to expand...
Yes. Just have to wobble it down(it fits snug inside the threads)to the shoulder inside the action to make sure it’s “seated”. Then the shouldered barrel(mine is 6.5cm) spins up and torques like normal. Adapter washer is pinned tight as far as I can tell.
 
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#773
lash said:
Interesting. I guess that takes away the (incorrect) general impression people have that prefit barrels are not readily available for the CDG action.
Click to expand...
Agreed. I was debating going to the Coup De Grace, and was relieved that I’d be able to swap barrels and still be able to grab cheaper Savage barrels off of NSS. Haven’t shot the rifle yet, but I think I’m gonna be happy.
 
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#774
Yes, please keep us updated on how it works. I saw that on their website a couple weeks ago but I had a new barrel blank coming in for my new-to-me CDG so I didn't pursue it further.

I was under the impression that some cartridges (6.5CM and bigger) could maybe get by without the coned breech, that magnums (.300, 338, etc.) would feed just fine with a flat breech, and little stuff like a .223 was a hard no-go. Guess maybe these would change that?

Anywho, very interested in hearing/seeing more about these adapters (y)
 
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#776
memilanuk said:
Yes, please keep us updated on how it works. I saw that on their website a couple weeks ago but I had a new barrel blank coming in for my new-to-me CDG so I didn't pursue it further.

I was under the impression that some cartridges (6.5CM and bigger) could maybe get by without the coned breech, that magnums (.300, 338, etc.) would feed just fine with a flat breech, and little stuff like a .223 was a hard no-go. Guess maybe these would change that?

Anywho, very interested in hearing/seeing more about these adapters (y)
Click to expand...

Magnum stuff is fine, I run a 6.5 PRC and 300 win mag without issue. My brother runs a 30-06 and he has also had no issue so long action standard may be fine too. Haven’t tried the smaller stuff but those adapters are interesting.
 
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