6.5 Creedmoor Freebore Questions

[Frankr]

Back I guess 5-6 years ago I had a savage 22" barrel 6.5 creed and a 24" barrel savage model 10 Predator Hunter in 6.5 creed. I had some Factory Hornady 6.5 in 140 A max and still have some and the OAL is 2.789 or so. I hand loaded Berger 140 HVLD's to 2.995 OAL and they were not touching the rifling in either gun as I loaded and shot them. I have since sold both guns. I thought the Freebore was .199 or so. well my buddy bought a Ruger predator American in 6.5 Creed and none of them will go into the rifle the throat is short. Like real shot. I 129 Gr Bullet is touching the rifling at around 2.680 or so, So real short. I talked to another guy who bought a Browning LR rifle and a Savage in 6mm Creed and he said they were real short. He bought Hornady Factory 108's and they would not chamber in either gun. He said he traded one in for a 6.5 Creed in a savage tactical rifle and it was the same real short so he sold it... I did not believe it. I was like what the heck is going on. So it seems they have shortened the Factory Freebore on the 6.5 Creedmoor to where a 140 is way below the neck shoulder junction deep in the powder space. Why ? It really defeats the whole purpose of the cartridge. Anyone run into this ? I far as I am concerned a OAL of 2.800 should feed from any short action and not be in the rifling but trust me it will not go in any Factory 6.5 Creed.
I am kind of glad I found this out and I won't waste my money buying any factory Creedmoor's.
I guess I am loss as to why they would make the throats that short because the two savage's I had back a few years ago were not short like these new ones and I guess if you understand the design of the cartridge and get the whole idea of the design shorting the freebore just kills the performance of the case on so many levels. Heck you might as well shoot anything else and any performance gains and accuracy gains due to case design are now not there. I mean WTH!..

 

[jamesh]

You are correct SAAMI throat specks for the 6.5 Creedmoor are .199" and change. I have not run into what you are seeing in any of my rifles. I happened to have OAL measurements for my 6.5 Creedmoor Howa and it is 2.865" with 140 Hybrids. If I recall correctly they are about .005" of the lands.

 

[Frankr]

jamesh is it a older rifle. The rifle I am talking about are all new 2018 models Yea a 2.865 OAL round will not chamber in any of these new rifle's. It is around 2.680 or so touching.. Actually at first I thought they were messed up in there calculations but they are not we used a Modified case and they are touching around 2.680 or so. It seems all the New factory rifle's are like this ? I say it is not right but is how they are I checked it myself.

 

[jamesh]

jamesh is it a older rifle. The rifle I am talking about are all new 2018 models Yea a 2.865 OAL round will not chamber in any of these new rifle's. It is around 2.680 or so touching.. Actually at first I thought they were messed up in there calculations but they are not we used a Modified case and they are touching around 2.680 or so. It seems all the New factory rifle's are like this ? I say it is not right but is how they are I checked it myself.

Bought new a year or two ago. Don't know how long it had been laying around but new enough that it had the new HACT trigger. The tip to ogive is longer on the Berger Hybrids than on a 140 Amax but do not recall how much longer. I haven't tried loading any longer than magazine length for my RPR but know I can load 140 Amaxes to 2.800" for it.

 

[Zero333]

Send it back to savage or have a Smith throat the chamber.

Ptg has a handheld throating tool if you rather do it yourself

 

[Bc'z]

That's odd.
With my 6five Ruger American Predator,
I'm confined to mag length 2.835 with whatever bullet I shoot.
143 eldx, 140 amax, 140 vld, 130 hybrid.
I believe my jam length was 2.86 or 2.89 with the 143 eldx.
Cant find my notes right now.

 

[Hiwayman92]

I feel your pain. I have a very accurate Tikka 6.5 CTR, which shoots 143 ELD-X bullets exceptionally well .040 off the lands... However those lands are 2.940. Not great for a mag fed gun! Through my research it seems these “SAAMI” spec factory guns are all over the board.

 

[Bart B.]

Even with freebore is the same across several chambers, their leade angles and diameters can vary. That means a given bullets ogive contact point with the leade (throat) can be different amounts from the case. A tenth inch spread can happen.

All chambers for a given cartridge are not equal dimension wise.

 

[Bart B.]

“SAAMI” spec factory guns are all over the board.

I don't think all firearms and ammo are SAAMI spec, even if their maker is a SAAMI member agreeing to specs.

Neither is their terminology referencing chamber and cartridge parts and dimensions what SAAMI glossary defines. Like the Tower of, it's the Business of Babble.

 

[Texas10]

Someone please explain how a MFG can call their firearm a 6.5 CM if it's not chambered to the reamer and print Hornaday established when they copyrighted it.

 

[Bart B.]

Someone please explain how a MFG can call their firearm a 6.5 CM if it's not chambered to the reamer and print Hornaday established when they copyrighted it.

I think....

Only the cartridge name is copyrighted. Cartridge and barrel dimensions are voluntarily followed, no law mandates them.

Call SAAMI or a company to verify.

 

[Ultimag]

Sammi freebore for the creed is .188

 

[jepp2]

 

[Rob01]

Sammi freebore for the creed is .188

No SAAMI freebore for the 6.5 is .199. The 6 is .183.

 

[whatsupdoc]

Back I guess 5-6 years ago I had a savage 22" barrel 6.5 creed and a 24" barrel savage model 10 Predator Hunter in 6.5 creed. I had some Factory Hornady 6.5 in 140 A max and still have some and the OAL is 2.789 or so. I hand loaded Berger 140 HVLD's to 2.995 OAL and they were not touching the rifling in either gun as I loaded and shot them. I have since sold both guns. I thought the Freebore was .199 or so. well my buddy bought a Ruger predator American in 6.5 Creed and none of them will go into the rifle the throat is short. Like real shot. I 129 Gr Bullet is touching the rifling at around 2.680 or so, So real short. I talked to another guy who bought a Browning LR rifle and a Savage in 6mm Creed and he said they were real short. He bought Hornady Factory 108's and they would not chamber in either gun. He said he traded one in for a 6.5 Creed in a savage tactical rifle and it was the same real short so he sold it... I did not believe it. I was like what the heck is going on. So it seems they have shortened the Factory Freebore on the 6.5 Creedmoor to where a 140 is way below the neck shoulder junction deep in the powder space. Why ? It really defeats the whole purpose of the cartridge. Anyone run into this ? I far as I am concerned a OAL of 2.800 should feed from any short action and not be in the rifling but trust me it will not go in any Factory 6.5 Creed.
I am kind of glad I found this out and I won't waste my money buying any factory Creedmoor's.
I guess I am loss as to why they would make the throats that short because the two savage's I had back a few years ago were not short like these new ones and I guess if you understand the design of the cartridge and get the whole idea of the design shorting the freebore just kills the performance of the case on so many levels. Heck you might as well shoot anything else and any performance gains and accuracy gains due to case design are now not there. I mean WTH!..

SAAMI freebore is .199, but as others have stated that means nothing as different manufactures tend
to use their own specification.

I have had a few 6.5 Creeds and they all had different freebore lengths. Two Gen2 Ruger Precision Rifles
that I owned had two different freebore lengths. A 6.5 Creed Bergara had a surprisingly long freebore length, longest I have ever seen.

A Proof Research 6.5 Creed barrel I have has a freebore length that is slightly shorter than both Rugers.

For my custom 6.5 Creed barrels I like a .169 freebore, that puts a 140 Berger hybrid at about
2.910 COAL touching the lands.

Bottom line is that 6.5 Creed freebore varies in factory barrels, if you handload its not a problem if you are using factory ammo then you must test to see if there are issues.

One thing that will seem to be short freebore but is not is a chamber not cut concentric to the bore leaving the lands in place on only one side of the bore.

 

[Rob01]

The varying in the factory chambers is not by choice but they just vary due to QC. They are supposed to be SAAMI but some are known for short like Savage and Ruger.

 

[Ultimag]

Interesting i stand corrected,I know is mine has .188,freebore
And with 143,eldx loaded to 2.805,@2790fps it shoots lights out
I assumed when my gs ordered the jgs reamers &
Chambered it at.188 he was going by sammi specs at any rate sorry for the wrong Info

 

[Ultimag]

View attachment 1299763

TY I stand corrected

 

[CNC-Dude]

I have (2) RPR that I load 153g A-Tips in and the COAL is 2.995" and is about .025" from jamb at that length. I have a Savage Axis that has much less freebore and can't load those for that rifle.