Tikka ARC conversion

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Mar 28, 2020
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If anyone has opened up a Tikka 223 to an ARC, would be possible for you to try and see if it will still extract a 223.
I would expect it to still work as a switch barrel, but you never know until you try it.
TIA
 
As much as I don’t love it I think I’m going to convert a savage I own to an arc vs a tikka, the bolt at JA is wildly expensive…
 
I believe there's a long discussion on this in here somewhere. From a couple months ago.


My mom took Tylenol when she was pregnant with me, but only when she was hung over
Nice deflection, the question I asked has never been discussed there.
 
Nice deflection, the question I asked has never been discussed there.
Why would you expect an arc bolt face to extract on a 223 case rim? 0.378 VS 0.441? Damn near like asking if a magnum bolt at 0.532 will extract a 308 at 0.473, how well does that work out?

Get snarky with your responses, and this is how people respond. No deflection, but asking you to think for yourself.
 
You're asking for trouble there man. If you're dead set on having one gun to run both, the logical option isn't a tikka unless you want to spend the money on a new bolt. Getting an action with a swappable bolt face is the ticket. I know the zermatts can do this.
 
I had a similar question: I've heard a standard bolt face will work (extract/eject) with an arc/grendel case.

It would be neat if someone could try that and let me know.
 
You're asking for trouble there man. If you're dead set on having one gun to run both, the logical option isn't a tikka unless you want to spend the money on a new bolt. Getting an action with a swappable bolt face is the ticket. I know the zermatts can do this.

Agreed - Tikka isn’t the platform for this. Zermatt is great, I swapped my 22-250 AI out to a 300 BLK in 15 min.
 
It also seems like you could do a standard to arc boltface with a removable bushing, like a snap ring.

Or I guess open a 223 bolt face but cut a groove into it where you could have a removable bushing/snap ring down to 223 from ARC.
 
I had a similar question: I've heard a standard bolt face will work (extract/eject) with an arc/grendel case.

It would be neat if someone could try that and let me know.
Not gonna do it reliably I expect, just measure the distance between the extract and opposite side of the bolt face, it’s barely less than .441” When the cartridge is centered in the chamber it might grip better but as it’s extracted the tension is gonna go down as the case head offsets to the opposite side. Seems like it would be rather prone to partial extractions getting hung up in the action.

Add some clicker resistance (hot load, die/reamer not matched well) and seems like there could easily be some failure to extract completely.
 
Nice deflection, the question I asked has never been discussed there.

My Brother in Christ,

Simply ask chat gpt to reference Rokslide for posts regarding building an arc off a tikka action. Or search.

I could have just made up some .

I was curious about the same kind of project. Read through some posts. Came to the conclusion it'd be more cost than it'd be worth for now.


Hopefully you get a hug later and cheer up
 
You would likely have better luck using a standard bolt face with the ARC than an ARC bolt face with a 223 as the difference is smaller.

You can certainly try it, if it doesn't work, then buy a 223 bolt body. But having to swap bolt parts would add to the trouble.

You could get the 350 legend from Eurooptic and have a complete rifle for about the cost of a complete bolt. Bet you could sell the parts and end up with a complete bolt for around $300.

Me, I would skip the ARC.
 
Why would you expect an arc bolt face to extract on a 223 case rim? 0.378 VS 0.441? Damn near like asking if a magnum bolt at 0.532 will extract a 308 at 0.473, how well does that work out?

Get snarky with your responses, and this is how people respond. No deflection, but asking you to think for yourself.
Getting back to this one, even if you open the bolt face the extractor will still be in the same position as it was with the smaller counterbore.
During extraction the pressure from the ejector pin will hold the round under the extractor at least until the case clears the chamber.
I imagine if the bolt is pulled back smartly there will not be a problem.
I don’t consider it snarky to expect that people responding actually read the question and had some useful information to contribute.
 
Getting back to this one, even if you open the bolt face the extractor will still be in the same position as it was with the smaller counterbore.
During extraction the pressure from the ejector pin will hold the round under the extractor at least until the case clears the chamber.
I imagine if the bolt is pulled back smartly there will not be a problem.
I don’t consider it snarky to expect that people responding actually read the question and had some useful information to contribute.
And if there is any case sticking during primary extraction, what happens now? You're the first proponent I've ever heard of this, and it's ridiculous.

Go ahead and run it if you so desire. To the rest of anyone else on here with common sense, DON'T use the incorrect bolt face for the case head.
 
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