Please ID Chambering

[YLeeFoxx]

I need help determining a rifle's chambering.
My gunsmith did a chamber cast and came up with a case length of 1.775", body diameter of .474" and the bore is .266".

Below are pictures of the chamber and the chamber cast next to a 260 round.

Thank you for your help.

 

[spife7980]

What rifle/ is there a certain era we should be leaning towards?
.266 is weird, that’s the bore and not the groves, right? How sure are we that it’s not a .264?
Where is that body diameter .474 at, base presumably?

 

[918v]

I vote 264 Creedmore

 

[YLeeFoxx]

Yes, the case measurement is near the base. I believe the rifle was put together around 2000.

Could it be .264"? Yes.


Thank you for your time. I greatly appreciate it.

 

[Mike Casselton]

6.5x55 imp

 

[whatsupdoc]

Its shorter than a 6.5x47 Lapua. You sure case length is 1.775

 

[ma smith]

measure the shoulder length if possible, and the neck length if you have calipers.
that will really help match a saami or wildcat print, IMHO

 

[YLeeFoxx]

6.5x55 imp

Too short.

 

[YLeeFoxx]

Its shorter than a 6.5x47 Lapua. You sure case length is 1.775

Pretty sure. The gunsmith measured it.

 

[YLeeFoxx]

measure the shoulder length if possible, and the neck length if you have calipers.
that will really help match a saami or wildcat print, IMHO

I don't have the chamber casting.

Sorry for the trouble, but i appreciate the help.

 

[918v]

Pretty sure. The gunsmith measured it.

How do you know he measured it right? Take a 6.5 Creedmoor case and see if it chambers.

 

[YLeeFoxx]

How do you know he measured it right? Take a 6.5 Creedmoor case and see if it chambers.

 

[YLeeFoxx]

I have CM gages on the way. May have some ammo around and will check.