Matching an existing throat with a UniThroater

[memilanuk]

So... lets say you want to match the throat on barrel A, on barrel B... and you have a Unithroater

The directions go over how to set the throater to match an existing barrel's throat. Got that part.

My (admittedly limited) experience is that the throat tends to 'move' a little post-chambering; I've seen up to 5 thou, personally. Not sure if that is a little, a lot, or average?

Where I have some question/concerns is this: if the *existing* barrel has already moved, and then we set the unithroater to match *that*, then the new barrel is likely to end up even *longer*, once it moves as well. Yes/no/maybe?

So if the answer to the above is 'yes' or even 'maybe'... would it be advisable to take the setting from the original barrel, and shorten it up a fuzz (technical term) so that when it *does* move, the new throat ends up right where the original one is?

Thanks,

Monte

 

[Dusty Stevens]

Why would the throat on a properly chambered barrel move? It can change with shooting but it never moves- the dianeter just gets bigger so it seems to move. If theres a bur in there and shooting smooths it out i can see that but then we go back to a properly chambered barrel doesnt move

 

[alinwa]

So... lets say you want to match the throat on barrel A, on barrel B... and you have a Unithroater

The directions go over how to set the throater to match an existing barrel's throat. Got that part.

My (admittedly limited) experience is that the throat tends to 'move' a little post-chambering; I've seen up to 5 thou, personally. Not sure if that is a little, a lot, or average?

Where I have some question/concerns is this: if the *existing* barrel has already moved, and then we set the unithroater to match *that*, then the new barrel is likely to end up even *longer*, once it moves as well. Yes/no/maybe?

So if the answer to the above is 'yes' or even 'maybe'... would it be advisable to take the setting from the original barrel, and shorten it up a fuzz (technical term) so that when it *does* move, the new throat ends up right where the original one is?

Thanks,

Monte

yes