Thread: Short Action CheyTac Mag

Looks like a cool project to me, I like the idea of short action (with a hunting rifle build in mind). Hey worst case scenario it ends up in a long action with room to seat the projectiles right out?

Keep up the posts as I'd love to see the outcomes of what you're doing?

kj

Thats a fucking good looking round.
Defiantly keen on results when you start shooting it.

So what action did you settle on?
Gonna be mag fed?
What sort of all up rifle weight are you lookin at?

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Seems like a lot of effort for a small weight saving in action weight , all the bullshit involved with case prep etc. Go factory caliber and get better resale and it just WORKS.
You should look for a barrel maker to sponsor you.

Dont get to caught up on the 6.5 version, its just to prove the brass could be formed down that far. The 338 version wont be a barrel burner at all. Effort is what some of us enjoy, this is not for commercial sale.

Thats the thing effort - I just cant believe how much farting around and money people will pour into having their own pet chambering. I also dont get the short action obsession - if you really want a short action get an R93 which will be plenty shorter than any turnbolt. The R8 is supposed to be even more compact.

Have to have a hobby I suppose.

Next question is - will it eject an unfired round without major surgery / bolt out? (suspect not??)

Ill buy a r93 chamber it and this and you can be the first and id say prob last to fire it. A case this size would never extract out of a blaser even if the bolt coped with the thrust, which i doubt it would.

The ejection port is no problem.

Each to their own and I certainly can see the enjoyment in it. Be good fun.

I had to ask how it was thinned, knowing the only safe way was on a lathe. That is a lot of work to get 20-50 cases only to be chucked out after x many firings.
How much case capacity will the projectile use up? If throated correctly it will quickly turn into a long action using the intended projectiles, no?

It would be interesting to see it perform as a .375 or .338

Originally Posted by L.R

Ill buy a r93 chamber it and this and you can be the first and id say prob last to fire it. A case this size would never extract out of a blaser even if the bolt coped with the thrust, which i doubt it would.

The ejection port is no problem.

Ya dont know much about how blaser works or action length then?
Maybe if your firing at ridiculous pressures and not exhausting any gas to atmosphere in time.

A blaser action will handle any conventional pressure thats out there. It is total ignorance to think or say it wont. They have been tested to destruction way above any pressures that can be achieved conventionally.

It employs radial locking very simililar to plenty of other systems out there. The purchase on the locking ring is greater than most similar systems yet to achieve locking it does not have to rotate to achieve battery.

The case is 56mm the Norma mag is 63mm and can just sneek in a short acton as a 7mm, this will fit in in 338 trim just.

The R8 is chambered in all the africa mags so it will take some steam, chey tac case head wouldnt fit on too many bolts though I assume?

Anyway, get an R8 with factory barrel in .338 "whatever" (improved if you must throw money away) and you have 99.9% of the same thing with no fucking around whatsoever, it will be lighter, shorter and it is still worth something if you ever need to sell it... sounds too easy really?

Its the biggest round in the short action thing that I just dont get If you need to get that max max fps then surely carrying 100-200 grams more action and putting in a full sized chey tac round is the way forward?? A rifle in that class dosent exactly want to be a lightweight anyway, people usually seem to be adding weight to serious thumpers like mercury recoil reducers etc. anyhoo

Originally Posted by R93

Ya dont know much about how blaser works or action length then?
Maybe if your firing at ridiculous pressures and not exhausting any gas to atmosphere in time.

A blaser action will handle any conventional pressure thats out there. It is total ignorance to think or say it wont. They have been tested to destruction way above any pressures that can be achieved conventionally.

It employs radial locking very simililar to plenty of other system out there. The purchase on the locking ring is greater than most similar systems yet to achieve locking it does not have to rotate to battery.

Trust me I really understand how they work, I've had a lot to do with building receivers for them. The R93 absolutely would not allow a big enough barrel tennon to allow extraction with this case, no doubt about it. On the other point, its a combination of case head area and pressure that create the load on the locking lugs or ring in the blaser, obviously the Cheytac has a very large case head and will put much more load on the locking mechanism than say a WSM case loaded to the same pressure. I highly doubt that the R93 action would cope with this much thrust and I don't think you would find anyone willing to find out, even if you did you would have to find a new way of extracting the case.

Its still way to big for the R8. You tell me what 338 that Blaser chambers for will do 300fps with a 300gr. I doubt the Blaser would be lighter than this will end up if they both had the same barrel length and contour.

This round is not for you Cyclist, its far to much work for conventional reloaders, and was not designed to be a commercial option.

You made out the action would not handle the pressure which is what I was talking about. Not footprint of a case.
Otherwise I would have brought up the LRS2 which would handle that round with slight modification.
Whacking up a receiver or 2 on Lathe and mill doesn't mean much to me unless you have used one extensively.
I hope you hardened the receivers you made, chemically?





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At no point did i mention pressure, we are talking about R93's. There is a huge difference still between the lapua case and the cheytac case.

I have used a Blaser quite a lot. I really enjoy the design and function of them, however I realise there limitations.

As for the hardening, we went a lot more in depth with the material choice and hardness than in the one you used, time will tell how they go. It seems that the 316L ones will do the job if the headspacing is always controlled i.e. not fireforming to AI, so our metarial which is much harder and tougher than 316 should be good.