I had to check myself to be sure.
Edi
SAMMI vers CIP
- Thread starter ruger77
- Start date
Edi
ruger77
Well-Known Member
Thanks for the advice Steve Kershaw is around 15 minutes from my location any why I been down to Steve’s place borescoped the barrel looks ok tried the yes no gauges bolt closed on the no go gauge so out of interest we put a 2 thou shim on the back of the no go gauge the bolt closed we worked up to a 8 thou shim on the back of the no go gauge bolt still closed
First off, I do not see any significant difference between CIP and SAAMI for the 30-06 Springfield. If there is, I would be grateful if someone would point this out.
Second, the 30-06 Springfield is one of a number of cartridges where the specified chamber is smaller than the specified cartridge. That is what the delta L is about and that should not be a problem - see the link I posted earlier
Thirdly, the headspace on that rifle may well be correct, but there may be some other dimensions that are not correct. The Proof Houses (in particular, the Birmingham Proof House) will have a complete suite of gauges to check neck diameter, throat length, etc., etc. I doubt any other gunsmith in the country will have these gauges, so if the OP really wants to make sure the chamber is correct in all respects then a trip to the Proof House is the way to ensure that.
Second, the 30-06 Springfield is one of a number of cartridges where the specified chamber is smaller than the specified cartridge. That is what the delta L is about and that should not be a problem - see the link I posted earlier
Thirdly, the headspace on that rifle may well be correct, but there may be some other dimensions that are not correct. The Proof Houses (in particular, the Birmingham Proof House) will have a complete suite of gauges to check neck diameter, throat length, etc., etc. I doubt any other gunsmith in the country will have these gauges, so if the OP really wants to make sure the chamber is correct in all respects then a trip to the Proof House is the way to ensure that.
Having just quickly reread this thread, am I correct in thinking only one brand of ammo was difficult to chamber , it's possible it's just Barnes that are the problem, how many times has this issue been posted about regarding PPU ?
and not the rifle . For some reason , I thought it was all . Not the 1st time I've misread something.
In which case , credit is due to @palmer_mike , @Island and @ MarinePMI, for calling the dents occurring on extraction and any others I may have missed.
I'm struggling to see any differences either
, apparently they exist . Agree though, there may be other incorrectly cut dimensions.
and not the rifle . For some reason , I thought it was all . Not the 1st time I've misread something.
In which case , credit is due to @palmer_mike , @Island and @ MarinePMI, for calling the dents occurring on extraction and any others I may have missed.
I'm struggling to see any differences either
, apparently they exist . Agree though, there may be other incorrectly cut dimensions.
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Just get a .270 or .308 as the deer won't be any more than dead from those two and it doesn't look many will be with the
3006...
It's like this.....If you like birds with big t its you won't be caring if they are in Metric or Imperial
3006...
It's like this.....If you like birds with big t its you won't be caring if they are in Metric or Imperial
Well, the 270 Win is derived from the 30-06 and it is another in that class where the chamber is smaller than the cartridge. The 30-06 Springfield has been around for over a hundred years and two world wars. Countless millions of rifles have been chambered for it and countless billions of rounds made. There is no problem with the 30-06 Springfield cartridge.Just get a .270 or .308 as the deer won't be any more than dead from those two and it doesn't look many will be with the
3006...
It's like this.....If you like birds with big t its you won't be caring if they are in Metric or Imperial
I see you left out half of my reply .308....
A hundred years on and it is 4 pages on why it doesn't fit lol
Yes I am sure they are fine but not this one....
Nothing wrong with the 308 Win. I did not have to say that, surely...?I see you left out half of my reply .308....
A hundred years on and it is 4 pages on why it doesn't fit lol
Yes I am sure they are fine but not this one....
Indeed, there appears to be a problem with 'this one'. If it is a chamber problem, then a bore scope can be utilised to see if there is any obvious problem due to reamer breakage, pick-up, scores etc. and the Proof House will have the necessary gauges to check the chamber dimensionally.
As it was not any part of the 3006 surely that is why it was left out....
Having spent a good amount of time work in the grinding and inspection departments of a toolroom you get to know what
"tenth's" are.
Things have to have a working tolerance that is why threads in the mod hole will be big enough so they will fit. The thread on the barrel won't be made to the top tolerance as then they will bind...
Used a worn reamer ( browed a 1" &1-2" one) last week which cut small so had to polish the pin to get the correct fit
Tad bigger than the 3006 but it worked just fine lol
ruger77
Well-Known Member
No it has problems with Remington SAKO hornady Barnes I’ve had lock ups with all these but Barnes were to poorest the rifle has now been returned to the place of purchase and will be collected by Viking arms then on to the proof house .the cases that have been fire formed were measured at 4.055 a no go gauge measures 4.049 the difference between a go gauge and a no go gauge 4 thou therefore 10thou above the go gaugeHaving just quickly reread this thread, am I correct in thinking only one brand of ammo was difficult to chamber , it's possible it's just Barnes that are the problem, how many times has this issue been posted about regarding PPU ?
and not the rifle . For some reason , I thought it was all . Not the 1st time I've misread something.
In which case , credit is due to @palmer_mike , @Island and @ MarinePMI, for calling the dents occurring on extraction and any others I may have missed.
I'm struggling to see any differences either
In the CIP document "Reference Gauges Chamber" where the dimensions and tolerances of chamber gauges are set out, there is the specific statement that, "The headspace of weapons of American origin may be tested with a gauge of SAAMI design." and while the gun may not have been made in America, the cartridge was certainly designed in America.
I would respectfully suggest that excessive headspace is not the problem with your rifle.
ruger77
Well-Known Member
Thanks for you suggestion the chamber was measured with CIP equipment because it is chambered in CIP
neil the plumber
Well-Known Member
Very interested in how this matter was resolved.
Just returned a Merkel K5, that would not group.
No joy from Merkel.
Returned to place of purchase, for them to have a look at.
Just returned a Merkel K5, that would not group.
No joy from Merkel.
Returned to place of purchase, for them to have a look at.
Have you ever chambered a cartridge and not fired ,ejected and looked for marks on the projectile ogive? Possibly you have projectiles jammed in the lead of rifling and thus pressure locks the bolt.
scrumbag
Well-Known Member
From Nosler's very own Instagram page:
CIP & Birmingham Nitro Proof. (Another proof house too?)
The mark on the right is the London Proof House.
ruger77
Well-Known Member
The matter is still not resolved the Merkel has been to Birmingham proof house I asked for the chamber to be measured but it seems they just fired two rounds through it one at 15 percent over charge and one at 20 percent over charge then returned it to Viking Arms ,Viking Arms have emailed Merkel and awaiting a response , so here we are no further on it is covered by a five year warranty and not functioning correctly so I guess the next stage would be trading standards
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