10X65R

Jager01 · January 31, 2009, 09:07 PM

Can anyone shed some light on the ballistics of this round and where to find ammunition in this chambering?

**Unclenick** · January 31, 2009, 10:31 PM

I don't find any information on a 10×65R. Do you maybe mean the 10.3×65R Baenziger? I know it is a .42 caliber (.423") cartridge about the same length as a .30-06, but with more case capacity. Most of the bullets available in that diameter seem to be in the 300 to 400 grain range. I just don't know what its operating pressures are supposed to be, so I can't guess at its actual performance?

Jager01 · February 3, 2009, 05:28 PM

Thanks for the Help, I was looking for ballistics data on 10x65R Collath.

**Unclenick** · February 4, 2009, 07:12 PM

Sorry. I had not heard of it and don't have any information on it that I can locate.

**Mike Irwin** · February 4, 2009, 10:50 PM

I've never heard of a 10x65Rmm Collath, but there is a 10.75x65R mm Collath listed in 11th edition of cartridges of the world.

It has no loading information, and only very sketchy historical information, other than to say that it's the largest of the Collath-developed cartridges and that case dimensions are similar to those of the .405 Winchester.

It does note that it was loaded with a 205-gr. bullet.

Jager01 · February 4, 2009, 11:05 PM

Sorry, I left out the 10.75.

January 31, 2009, 09:07 PM	#1
Jager01 Junior Member Join Date: August 26, 2008 Posts: 6	10X65R Can anyone shed some light on the ballistics of this round and where to find ammunition in this chambering?

January 31, 2009, 10:31 PM	#2
Unclenick Staff Join Date: March 4, 2005 Location: Ohio Posts: 21,061	I don't find any information on a 10×65R. Do you maybe mean the 10.3×65R Baenziger? I know it is a .42 caliber (.423") cartridge about the same length as a .30-06, but with more case capacity. Most of the bullets available in that diameter seem to be in the 300 to 400 grain range. I just don't know what its operating pressures are supposed to be, so I can't guess at its actual performance? __________________ Gunsite Orange Hat Family Member CMP Certified GSM Master Instructor NRA Certified Rifle Instructor NRA Benefactor Member and Golden Eagle

February 3, 2009, 05:28 PM	#3
Jager01 Junior Member Join Date: August 26, 2008 Posts: 6	Collath Thanks for the Help, I was looking for ballistics data on 10x65R Collath.

February 4, 2009, 07:12 PM	#4
Unclenick Staff Join Date: March 4, 2005 Location: Ohio Posts: 21,061	Sorry. I had not heard of it and don't have any information on it that I can locate. __________________ Gunsite Orange Hat Family Member CMP Certified GSM Master Instructor NRA Certified Rifle Instructor NRA Benefactor Member and Golden Eagle

February 4, 2009, 11:05 PM	#6
Jager01 Junior Member Join Date: August 26, 2008 Posts: 6	You are right Sorry, I left out the 10.75.

February 4, 2009, 10:50 PM	#5
Mike Irwin Staff Join Date: April 13, 2000 Location: Northern Virginia Posts: 41,388	I've never heard of a 10x65Rmm Collath, but there is a 10.75x65R mm Collath listed in 11th edition of cartridges of the world. It has no loading information, and only very sketchy historical information, other than to say that it's the largest of the Collath-developed cartridges and that case dimensions are similar to those of the .405 Winchester. It does note that it was loaded with a 205-gr. bullet.