bore diameter differences on new barrel

[Benjerman08]

While looking to order a new barrel for my smith to put on, I noticed on the Kreiger site that one has to choose a bore diameter of either .2360 or 2370 for .243 caliber. What would the difference be and what would make a person choose one or the other? Thanks.

 

[jonbearman]

I know someone will chime in but the general consensus is .237 which has less friction. I would call krieger or any barrel maker and see what they think.

 

[jr600yd]

Don't know? I've shot both and can't tell the difference.

 

[alf]

General rule of thumb is the .237's are for close range BR with flat base bullets that have a fatter pressure ring.

The .236's are for long range using higher BC boatail bullets that generally measure smaller in diameter, as they don't have a pronounced pressure ring.

Both can and do work at both disciplines.

 

[Benjerman08]

ok thanks. I must have talked to kreiger before as the .2360 is what I have, but couldn't remember why it was chosen.

 

[butchlambert]

I think it is all in the shooters head.

 

[alf]

I think it is all in the shooters head.

While a lot of the things we do in BR can fall into the feel good category, in my opinion, this ain't one of them.....

 

[butchlambert]

Well Alf,
I know HofF shooters that use both. I'm not qualified to say which Hall of Fame shooter is wrong.