Originally Posted by wheelin454
I am wondering what is required to change the barrel on a old 7mm with a new never fired take off barrel. I see these new take off barrels for sale for 50$ and wonder how close would the head spacing be? Are all Remington the same from the factory or would you have to have a lathe and a reamer? Any information would be appreciated.
The problem with take off barrels is that they are a pig in a poke (You never know whether it will be a good one or a bad one)
But it still has to be head spaced and possibly reamed. All replacement barrels must be head spaced to make them safe.
I have only seen one barrel fit perfect without head spacing out of many.(that is the reason they are normally cheap).
I only keep the brand new take offs to because at least they have a chance of being OK.
After I take them off, I place them between centers to see if they are straight. If they are, I normally set them back one thread and re cut the chamber to head space and have fairly good luck getting them to shoot under 1 MOA. Some shoot a 1/2 MOA but that is rare.
If they are not straight, I make tools out of them. As one of our members says "it is hard to make a silk purse out of a sows ear"
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