Barrel breech question

[ajfpa]

Hi all, joined the site a few weeks ago. My question, I have a Kauger arms BRII with a 223 semi coned bolt nose. Will I be able to use a flat breech with the semi coned bolt.

 

[Fast14riot]

Might have difficulty feeding that way

 

[LVLAaron]

Hi all, joined the site a few weeks ago. My question, I have a Kauger arms BRII with a 223 semi coned bolt nose. Will I be able to use a flat breech with the semi coned bolt.

Why?

 

[ajfpa]

Why?

Because I have a barrel with a flat breech. If one of the gunsmith members say no I will shop for a new barrel.

 

[Alex Wheeler]

The function of a coned breech is to guide the bullet point into the chamber of an un guided cartridge (single shot). In a magazine fed rifle the cartridge is guided and the magazine, feel rails, and ramp will guide the cartridge into the chamber. If your magazine is not feeding well, a semi cone will not help that. A semi cone functions the same as a flat breech. All the cone on a semi cone does is guide the point of the bullet righting into the flat the surrounds the rear of the chamber. It will not feed the bullet into the chamber. A semi cone does nothing for feeding. Thats why Tikka does not cut a semi cone breech even though their bolt is a semi cone. While cutting a semi cone breech does not hurt anything, it does not help anything either. The flat breech is perfectly fine.

 

[ajfpa]

The function of a coned breech is to guide the bullet point into the chamber of an un guided cartridge (single shot). In a magazine fed rifle the cartridge is guided and the magazine, feel rails, and ramp will guide the cartridge into the chamber. If your magazine is not feeding well, a semi cone will not help that. A semi cone functions the same as a flat breech. All the cone on a semi cone does is guide the point of the bullet righting into the flat the surrounds the rear of the chamber. It will not feed the bullet into the chamber. A semi cone does nothing for feeding. Thats why Tikka does not cut a semi cone breech even though their bolt is a semi cone. While cutting a semi cone breech does not hurt anything, it does not help anything either. The flat breech is perfectly fine.

Thank you, Alex, for taking time to explain the concept. I watched your interview with Erik Coritna, and for someone with your knowledge to take the time to answer a question and explain it in simple terms, is appreciated!

 

[Alex Wheeler]

No problem.

 

[Rat Rifle]

Hi all, joined the site a few weeks ago. My question, I have a Kauger arms BRII with a 223 semi coned bolt nose. Will I be able to use a flat breech with the semi coned bolt.

I have Your exact same set up, except in a 6 BRA. It works fine.

 

[ajfpa]

I have Your exact same set up, except in a 6 BRA. It works fine.

Awesome, thanks for the reply.

 

[Danley]

Was your barrel fitted & headspaced for a Kauger?

 

[natdscott]

If one of the gunsmith members say...

Ah. There we are.

Noted and quoted, for posterity.

 

[Rat Rifle]

Was your barrel fitted & headspaced for a Kauger?

It is a Prefit Drop In, Headspace is controlled with a Nut.