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Coup De Grace vs Nucleus or Origin

So, why not nut the daggum things and start shooting. Its the "easy button" for builds. Shouldered prefits are no more accurate than a small shank nut. The company I am working with said this exact same thing and don't want the hassle of customers running into trouble doing the dick dance of actions from different manufacturers having slightly different tolerances.

Cause swapping barrels with a nut is a PITA. Shouldered barrels are cleaner and easier to deal with and its not rocket science so why not.
 
Barrel nut is kind of nice to set head space where you want it. If you want the barrel nut permanent for easy barrel changes a dab of Loctite 672 will do the trick.
 
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Cause swapping barrels with a nut is a PITA. Shouldered barrels are cleaner and easier to deal with and its not rocket science so why not.
Absolute bullshit. You have a barrel, wrench, go gauge/nogo gauge, barrel vise, and action. 2 minutes. 55ftlbs vs 80ftbls of a shouldered prefit even.
No proprietary internal action wrenches.
 
So, why not nut the daggum things and start shooting. Its the "easy button" for builds. Shouldered prefits are no more accurate than a small shank nut. The company I am working with said this exact same thing and don't want the hassle of customers running into trouble doing the dick dance of actions from different manufacturers having slightly different tolerances.
What if I want a 1.25" barrel?
Why would tolerances be different?
 
Absolute bullshit. You have a barrel, wrench, go gauge/nogo gauge, and action. 2 minutes. 55ftlbs vs 80ftbls of a shouldered prefit even.
150lb/ft minimum.
 
Absolute bullshit. You have a barrel, wrench, go gauge/nogo gauge, barrel vise, and action. 2 minutes. 55ftlbs vs 80ftbls of a shouldered prefit even.

And the nut, you left that part out. A part I no longer want to deal with hence the reason I buy actions with consistent head space.
 
So, why not nut the daggum things and start shooting. It’s the "easy button" for builds. Shouldered prefits are no more accurate than a small shank nut. The company I am working with said this exact same thing and don't want the hassle of customers running into trouble doing the dick dance of actions from different manufacturers having slightly different tolerances.
I get that, I do. I already have multiple barrels for the origin action, I personally don’t like the barrel nut because then I have to re set headspace each time i swap barrels, or major POI shift when I put a barrel back on. Plus when a product is advertised as something, I expect it to live up to that.
Also, the action to me was very not smooth. I couldn’t get over it. It bugged me a lot.
 
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Absolute bullshit. You have a barrel, wrench, go gauge/nogo gauge, barrel vise, and action. 2 minutes. 55ftlbs vs 80ftbls of a shouldered prefit even.
No proprietary internal action wrenches.
I haven’t done it so I can’t say, but swapping my origin barrel 7 times gave me no more than a .1 shift. Not sure if that’s as repeatable with a barrel nut, but I don’t want to be taking go gauges around with me when I swap barrels either. I’m not saying it’s not easy, but it absolutely isn’t as easy as swapping shouldered barrels.
 
I haven’t done it so I can’t say, but swapping my origin barrel 7 times gave me no more than a .1 shift. Not sure if that’s as repeatable with a barrel nut, but I don’t want to be taking go gauges around with me when I swap barrels either. I’m not saying it’s not easy, but it absolutely isn’t as easy as swapping shouldered barrels.
Torque it to 150lb/ft and I bet that .1 gets eaten up in the noise of your load. I take my barrels off to clean them, and they have never not repeated zero.
 
And the nut, you left that part out. A part I no longer want to deal with hence the reason I buy actions with consistent head space.
I get that, I do. I already have multiple barrels for the origin action, I personally don’t like the barrel nut because then I have to re set headspace each time i swap barrels, or major POI shift when I put a barrel back on. Plus when a product is advertised as something, I expect it to live up to that.
Also, the action to me was very not smooth. I couldn’t get over it. It bugged me a lot.
That’s a shame. Mine is slick as owl shit. I got a few more enroute with a proof shouldered prefit. I’ll report back.
 
That’s a ton of torque! Aero told me 80, I do 80 on my origin. 150 seems extremely excessive to me. That’s gotta be a bigger to break loose. I already have to get a breaker bar on mine.
Torque it to 150lb/ft and I bet that .1 gets eaten up in the noise of your load. I take my barrels off to clean them, and they have never not repeated zero.
 
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Hopefully mine was an anomaly. It made me physically bummed out when I started running it. Binding, could feel it interfering with the action. Best way I can describe it is a gritty trigger. Side by side with my origin they weren’t even a comparison. In fact I went to the sporting goods store and every action felt better, including a ruger American, Thompson center compass, and of course tikka(mine included). Ymmv
That’s a shame. Mine is slick as owl shit. I got a few more enroute with a proof shouldered prefit. I’ll report back.
 
So, why not nut the daggum things and start shooting. Its the "easy button" for builds. Shouldered prefits are no more accurate than a small shank nut. The company I am working with said this exact same thing and don't want the hassle of customers running into trouble doing the dick dance of actions from different manufacturers having slightly different tolerances.

Is the manufacturer doing carbon fiber savage prefits with the conical breach?
 
Is the manufacturer doing carbon fiber savage prefits with the conical breach?
I don’t think anyone has said they are doing savage style with a nut and the comical breach. I bet all the CDG prefits will be shouldered. With the conical breach.
 
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That’s a ton of torque! Aero told me 80, I do 80 on my origin. 150 seems extremely excessive to me. That’s gotta be a bigger to break loose. I already have to get a breaker bar on mine.
It really isn't any torque at all for the size of connection. It's literally the minimum.
 
And the nut, you left that part out. A part I no longer want to deal with hence the reason I buy actions with consistent head space.
I apologize for being so crass, it’s just that “Righty tighty, lefty loosey” is not hard.
 
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I apologize for being so crass, it’s just that “Righty tighty, lefty loosey” is not hard.
It’s not hard, but it is annoying… I like my origin except the pinned recoil lug because dropping it is annoying, not hard. Same thing with barrel nuts. To me, they’re annoying, especially when you can get a shouldered prefit for practically the same price.
 
Speaking of nuts. Ran into this today installing a new factory take off Savage barrel on a Nucleus:
thumbnail_image6.jpg


The Savage nut wasn't long enough to cover the threads when head space was set. I see why Aero went with the longer barrel nut for the "Savage small shank" pattern. Just FYI.

Some thread conditioning porn: I forgot to take a before pic, but the threads were a hot F'N mess. Go figure, Savage quality.
thumbnail_image5.jpg


A right daggum Franken gun! Savage, ARC, Aero, and MDT parts. "It's Alive!
Slinging 137gr Hammer Hunters at 3150fps will make it an absolute death ray! (.308 Winchestershire)
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thumbnail_image4.jpg
 
I personally don’t like the barrel nut because then I have to re set headspace each time i swap barrels
I did a test on a barrel I have. I carefully used red Loctite on the nut side when I set my headspace on my Nucleus. I later pulled it off and reinstalled it using a barrel vice and action wrench as if it was a shouldered barrel. I marked the nut and barrel and seen no movement of the nut. It head spaced like it should have.

I pulled that barrel and to remove the nut I used CRC in the red can, not the green non-flourinated stuff, it melted the Loctite with little fan fare. So if you swap barrels like I was doing it works well.
 
A barrel nut will allow for more consistent setting of headspace.
All these folks that blather on about "but muh tolerances!!!".
A tolerance is an acceptable deviation from the spec'd nominal dimensions, that deviation is set by the manufacterer.
A barrel, equipped with a barrel nut will allow you to compensate for those deviations from nominal.
What is the tolerance (deviation from nominal)of the manufactured action? What is the tolerance (deviation from nominal) of the shouldered prefit? While you most likely won't run into excessive headspace, tolerance stacking says SOME will have too much headspace for maximum accuracy potential.
The way around that?
Either have a gunsmith install and properly headspace the barrel, or use a barrel nut system, which (if chambered correctly) eliminates the issue.
 
"Setting your own headspace" sounds like a recipe for disaster with some of the shit I read on here, and you're limited to a 1.06" diameter barrel. Lame.
 
I’m a big fan of barrel nuts too, but on a non shit action there is no reason not to have a shoulder. Provided your smith is worth a shit and knows how to work a lathe.
 
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A barrel nut will allow for more consistent setting of headspace. False.
All these folks that blather on about "but muh tolerances!!!".
A tolerance is an acceptable deviation from the spec'd nominal dimensions, that deviation is set by the manufacterer. True.
A barrel, equipped with a barrel nut will allow you to compensate for those deviations from nominal. So?
What is the tolerance (deviation from nominal)of the manufactured action? What is the tolerance (deviation from nominal) of the shouldered prefit? Most are +/-.0005 - +/- .001" While you most likely won't run into excessive headspace, tolerance stacking says SOME will have too much headspace for maximum accuracy potential. Prove it with evidence.
The way around that? Not needed.
Either have a gunsmith install and properly headspace the barrel, or use a barrel nut system, which (if chambered correctly) eliminates the issue. No need for either in the current era of manufacturing.
Oh hai!
 
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A barrel nut will allow for more consistent setting of headspace. False. Really, How so?
All these folks that blather on about "but muh tolerances!!!".
A tolerance is an acceptable deviation from the spec'd nominal dimensions, that deviation is set by the manufacterer. True.
A barrel, equipped with a barrel nut will allow you to compensate for those deviations from nominal. So? Here you are agreeing with my first statement
What is the tolerance (deviation from nominal)of the manufactured action? What is the tolerance (deviation from nominal) of the shouldered prefit? Most are +/-.0005 - +/- .001" Prove it with evidence
While you most likely won't run into excessive headspace, tolerance stacking says SOME will have too much headspace for maximum accuracy potential. Prove it with evidence. Why? the fact that you have, in your previous statment admitted there are tolerances in play, is proof enough that some headspace, while not excessive, will be more than most that are interested in accuracy, would find desireable.
The way around that? Not needed. For you, maybe.
Either have a gunsmith install and properly headspace the barrel, or use a barrel nut system, which (if chambered correctly) eliminates the issue. No need for either in the current era of manufacturing. Because no one has ever shipped a product that is on the edge of specs.
 
A barrel nut will allow for more consistent setting of headspace. False. Really, How so? how is something that moves ever going to be more consistent than a solid chunk of steel that can’t move?
All these folks that blather on about "but muh tolerances!!!".
A tolerance is an acceptable deviation from the spec'd nominal dimensions, that deviation is set by the manufacterer. True.
A barrel, equipped with a barrel nut will allow you to compensate for those deviations from nominal. So? Here you are agreeing with my first statement. A good action won’t have deviations. Barrel nuts are for those that do.
What is the tolerance (deviation from nominal)of the manufactured action? What is the tolerance (deviation from nominal) of the shouldered prefit? Most are +/-.0005 - +/- .001" Prove it with evidence. Measure your good action yourself. Compare to print. Find me an example of a good action that gets released from the manufacturer that isn’t.
While you most likely won't run into excessive headspace, tolerance stacking says SOME will have too much headspace for maximum accuracy potential. Prove it with evidence. Why? the fact that you have, in your previous statment admitted there are tolerances in play, is proof enough that some headspace, while not excessive, will be more than most that are interested in accuracy, would find desireable. If you have a shoulder and a good action then you don’t have to worry about it at all.
The way around that? Not needed. For you, maybe. It’s not if you action is good.
Either have a gunsmith install and properly headspace the barrel, or use a barrel nut system, which (if chambered correctly) eliminates the issue. No need for either in the current era of manufacturing. Because no one has ever shipped a product that is on the edge of specs. If the spec is a thou, like a good action is these days, and the smith is worth a shit and can hit a spec then it has kk need these days.
 
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I think the shouldered prefit camp just like the aesthetics of the style. That is just fine. Our money, our preference to build a gun as we like. Like women will buy uncomfortable shoes, but the look great in style.
 
A barrel nut will allow for more consistent setting of headspace. False. Really, How so?
All these folks that blather on about "but muh tolerances!!!".
A tolerance is an acceptable deviation from the spec'd nominal dimensions, that deviation is set by the manufacterer. True.
A barrel, equipped with a barrel nut will allow you to compensate for those deviations from nominal. So? Here you are agreeing with my first statement
What is the tolerance (deviation from nominal)of the manufactured action? What is the tolerance (deviation from nominal) of the shouldered prefit? Most are +/-.0005 - +/- .001" Prove it with evidence
While you most likely won't run into excessive headspace, tolerance stacking says SOME will have too much headspace for maximum accuracy potential. Prove it with evidence. Why? the fact that you have, in your previous statment admitted there are tolerances in play, is proof enough that some headspace, while not excessive, will be more than most that are interested in accuracy, would find desireable.
The way around that? Not needed. For you, maybe.
Either have a gunsmith install and properly headspace the barrel, or use a barrel nut system, which (if chambered correctly) eliminates the issue. No need for either in the current era of manufacturing. Because no one has ever shipped a product that is on the edge of specs.
all things being equal

if the shooter only shoots hand loads, none of this matters as long if its within sammi, magazine OAL, action design safety specs

if you only shoot factory ammo, potential accuracy may not be seen
 
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A barrel nut will allow for more consistent setting of headspace. False. Really, How so? Taking off and retorquing a shouldered barrel will always be more consistent that fucking with 3 pieces.
All these folks that blather on about "but muh tolerances!!!".
A tolerance is an acceptable deviation from the spec'd nominal dimensions, that deviation is set by the manufacterer. True.
A barrel, equipped with a barrel nut will allow you to compensate for those deviations from nominal. So? Here you are agreeing with my first statement Should have said, "What deviations?"
What is the tolerance (deviation from nominal)of the manufactured action? What is the tolerance (deviation from nominal) of the shouldered prefit? Most are +/-.0005 - +/- .001" Prove it with evidence I will circle back with evidence.
While you most likely won't run into excessive headspace, tolerance stacking says SOME will have too much headspace for maximum accuracy potential. Prove it with evidence. Why? the fact that you have, in your previous statment admitted there are tolerances in play, is proof enough that some headspace, while not excessive, will be more than most that are interested in accuracy, would find desireable. Prove that +/-.001" of headspace can have any bearing on accuracy with evidence.
The way around that? Not needed. For you, maybe. Maybe. Maybe a lot more than me.
Either have a gunsmith install and properly headspace the barrel, or use a barrel nut system, which (if chambered correctly) eliminates the issue. No need for either in the current era of manufacturing. Because no one has ever shipped a product that is on the edge of specs. Because no gun smith has ever shipped a shoddy thread and chamber job.
 
I think the shouldered prefit camp just like the aesthetics of the style. That is just fine. Our money, our preference to build a gun as we like. Like women will buy uncomfortable shoes, but the look great in style.
Far more size options.
 
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I tell ya what guys, if I didn't have bad luck I would have no luck at all! :D Murphy is pretty hard on me. So I can imagine my shouldered prefit experiences would end up a headache. I have a Bartlein prefit to put on a SOLUS action that arrives in a few days. Because I like to Fool around and find out!

Poor @Tremor3Guy is the example I fear.
 
I think the shouldered prefit camp just like the aesthetics of the style. That is just fine. Our money, our preference to build a gun as we like. Like women will buy uncomfortable shoes, but the look great in style.
Its not aesthetics for me, its about balance and simplicity. Puts more mass at the action. With a shoulder there is literally zero to mess with, you dont set shit and the only way to mess up the install is if you just... dont install it.
Again, provided your action is good enough to accept a shouldered prefit and your smith isnt shit.

Also, buying a good barrel nut barrel costs as much as a good shouldered barrel so the only actual cost savings are when you buy a lesser quality blank to start with in the first place. Cheap shit costs less than good shit.
 
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I am not an 1/4 MOA all day like some self proclaimed shooters. When I’m behind the trigger I can’t tell if a barrel is shouldered or nutted. I like the looks of a shouldered barrel better and they are slightly easier to install, but I don’t believe one makes me shoot better. Prefits need to be checked for proper head space just like a nut system. Tolerances can stack and mistakes can happen.
 
I am not an 1/4 MOA all day like some self proclaimed shooters. When I’m behind the trigger I can’t tell if a barrel is shouldered or nutted. I like the looks of a shouldered barrel better and they are slightly easier to install, but I don’t believe one makes me shoot better. Prefits need to be checked for proper head space just like a nut system. Tolerances can stack and mistakes can happen.
Like anything else proper QC/QA hides a lot of mistakes upon assembly
 
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ARC is running +/-.002" across all their actions. Show me you can shoot the difference between a gun that's -.002" and one that's +.002".
 
ARC is running +/-.002" across all their actions. Show me you can shoot the difference between a gun that's -.002" and one that's +.002".
as you know it's not just the OEM action mfg, it's also the smith/prefit company as well

if they are a shit mess no matter how good the action is, all bets are off



add to it, i was just speaking to a VERY-VERY well-known action MFG and they suggested taking 10 actions and measuring for headspace specs...WTF


you need 2 to tango
 
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I did a test on a barrel I have. I carefully used red Loctite on the nut side when I set my headspace on my Nucleus. I later pulled it off and reinstalled it using a barrel vice and action wrench as if it was a shouldered barrel. I marked the nut and barrel and seen no movement of the nut. It head spaced like it should have.

I pulled that barrel and to remove the nut I used CRC in the red can, not the green non-flourinated stuff, it melted the Loctite with little fan fare. So if you swap barrels like I was doing it works well.
I have done this A LOT and never had a nut move except initially. If they are going to move they will do it the first time you remove the barrel. After that, I have 223 barrels that have been moved dozens of times with no issue. I use heat to remove the nuts when the barrel is shot out and then spin the nut on and off until it goes easily before moving it to the new barrel. I will have to try the crc in the future.

For short to mid range hunting barrels I really like Criterion Savage prefits. I also run them for my 223 practice barrels. They shoot really well most of the time. I have never had one that wouldn't shoot 3/4 moa at distance with a little load work and good components. (They have all shot .5" average for 5 shots at 100 yards with their preferred load.)

For match barrels, or hunting guns I want to shoot past 500 yards, I prefer cut rifled barrels done by a really good smith. Since I'm already paying for good stuff, I typically have these barrels shouldered unless I want to be able to run them on a savage action. A bartlein or other cut barrel, or even a good lapped button rifled barrel, chambered by my smith will usually shoot just about any load with high end brass and Berger bullets into sub half minute for 5 shots.

It's tough to beat the value of NSS prefits for $300. It was especially tough when Criterion put 50% off certs on tons of prize tables, and I was paying $185 for them. I am super appreciative that they did that. My wife, kids, and I have several barrels from those deals that shoot awesome for their use case.
 
I tell ya what guys, if I didn't have bad luck I would have no luck at all! :D Murphy is pretty hard on me. So I can imagine my shouldered prefit experiences would end up a headache. I have a Bartlein prefit to put on a SOLUS action that arrives in a few days. Because I like to Fool around and find out!

Poor @Tremor3Guy is the example I fear.
I truly hope you have better luck than I.
 
I truly hope you have better luck than I.
Someone from a well know PRS shop sent out an assembled rifle and the head space was WAY off. It happens, not often, but it can happen. It’s always best to have a go/ no go gauge when installing a barrel, pre fit or nut system.
 
Someone from a well know PRS shop sent out an assembled rifle and the head space was WAY off. It happens, not often, but it can happen. It’s always best to have a go/ no go gauge when installing a barrel, pre fit or nut system.
Absolutely! My barrels headspaced perfectly on my origin action. We measured a .0015” difference between origin and Solus. Aero inspected and found it .0002” from nominal. So everything was made to spec, I believe the Aero was built around the proof prefit and not the origin action headspace dimensions. So I think it means some prefit barrels won’t headspace correctly, even if they do on an origin action.
This was the exact reason I had a smith install the barrel and check headspace, gotta check those things with prefits!
Same smith also fixes prefits for tikkas all the time as he’s seen as much as .011” difference action to action.
I guess it all depends on what each persons accepts as correct headspace. For me, it’s go gauge and no go gauge.
 
I will say Aero has stood by their product 100%. I wasn’t 100% happy and they tried multiple ways to make it right and eventually offered a refund. Their customer service has been absolutely top notch!
 
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I like the fact I can have 308 WIN brass that doesn't stretch .012" upon first firing. I got my headspace on my Nucleus set go/no-go with only .004" stretch. Bumping the shoulders .002" from fired is much easier to hit target bump. With my comparator factory Lapua and FGMM come with shoulders t 1.610" (My gauge sits low on the shoulder) fired case at 1.614 free bolt closure. 1.615 drags on the bolt closure a bit. 1.616 is a no-go.

Previous 308 guns, mostly semi autos, would measure with the same comparator 1.621 fired. Trying to maintain .001" shoulder bump was a bear. With annealed cases too.
 
I will say Aero has stood by their product 100%. I wasn’t 100% happy and they tried multiple ways to make it right and eventually offered a refund. Their customer service has been absolutely top notch!
It's possible Aero stopped sending SOLUS actions. I had some on order since Jan 30 and just the stock is being sent...