I have a 30" K&P 1.25" 1-8.25" twist 6.5 barrel that has heavy flutes. I would like to re-chamber to a 6.5 creedmore but don't want the 30", would rather have 26 at the most. I do intend to use a barrel block. Question is will the fluting be a problem when threading for the action?
Gunsmithing Cutting a fluted barrel. help
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Re: Cutting a fluted barrel. help
Depends on where the flutes end up. Over the chamber or very close to it I may think twice about doing it but to be sure I would want to see it.
Depends on where the flutes end up. Over the chamber or very close to it I may think twice about doing it but to be sure I would want to see it.
Re: Cutting a fluted barrel. help
Thanks, that is why I mentioned the barrel block. Wouldn't the block if butted up to the action provide the additional diameter needed?
Thanks, that is why I mentioned the barrel block. Wouldn't the block if butted up to the action provide the additional diameter needed?
Re: Cutting a fluted barrel. help
If you are referring to something like this http://www.6mmbr.com/gunweek075.html you still have an unknown question.
If the fluting was over the chamber even with the block I would still question it. But this type of set up is a BR thing and I don't deal with this type of set-up and I wouldn't want to guess.
Might want to ask over at 6mmbr.com and see if it has been done before.
If you are referring to something like this http://www.6mmbr.com/gunweek075.html you still have an unknown question.
If the fluting was over the chamber even with the block I would still question it. But this type of set up is a BR thing and I don't deal with this type of set-up and I wouldn't want to guess.
Might want to ask over at 6mmbr.com and see if it has been done before.
Re: Cutting a fluted barrel. help
I'm going to assume you mean an 1.250" straight barrel. Measure the depth of the flutes. If they are not more than .125" deep then I would think you would be safe. Peak pressure is reached when the bullet is 5-6" down the barrel in a round that size. On most fluted barrels the bullet would be under the flutes anyway. I'm holding a 338-378 Wby factory barrel in my hand. 4.5" down the barrel the diameter is .890" with a flute depth of about .075". That leaves .740" less .338" for .402" and a wall thickness of .201" on each side. That sounds scary as hell when you do the math. Now if you're talking about cutting the barrel off short enough that you are turning the flutes off to make the tenon, interupted cuts aren't much fun. Take it off the muzzle end. Easier to cut and crown than turn down.
I'm going to assume you mean an 1.250" straight barrel. Measure the depth of the flutes. If they are not more than .125" deep then I would think you would be safe. Peak pressure is reached when the bullet is 5-6" down the barrel in a round that size. On most fluted barrels the bullet would be under the flutes anyway. I'm holding a 338-378 Wby factory barrel in my hand. 4.5" down the barrel the diameter is .890" with a flute depth of about .075". That leaves .740" less .338" for .402" and a wall thickness of .201" on each side. That sounds scary as hell when you do the math. Now if you're talking about cutting the barrel off short enough that you are turning the flutes off to make the tenon, interupted cuts aren't much fun. Take it off the muzzle end. Easier to cut and crown than turn down.
Re: Cutting a fluted barrel. help
How far ahead of the action do the flutes start, and how long are the flutes?
How far ahead of the action do the flutes start, and how long are the flutes?
